Academia.eduAcademia.edu
Phytotaxa 275 (3): 191–227 http://www.mapress.com/j/pt/ Copyright © 2016 Magnolia Press ISSN 1179-3155 (print edition) Article PHYTOTAXA ISSN 1179-3163 (online edition) http://dx.doi.org/10.11646/phytotaxa.275.3.1 A classification for Blechnaceae (Polypodiales: Polypodiopsida): New genera, resurrected names, and combinations ANDRÉ LUÍS DE GASPER1,2, VINÍCIUS ANTONIO DE OLIVEIRA DITTRICH3, ALAN R. SMITH4 & ALEXANDRE SALINO2 1 Universidade Regional de Blumenau, Departamento de Ciências Naturais, Rua Antonio da Veiga, 140, Victor Konder, CEP 89030-903, Blumenau, SC, Brazil; algasper@gmail.com 2 Universidade Federal de Minas Gerais, Programa de Pós-Graduação em Biologia Vegetal, PO Box 486, 31270-901, Belo Horizonte, MG, Brazil; salinobh@gmail.com 3 Universidade Federal de Juiz de Fora, ICB, Departamento de Botânica, Rua José Lourenço Kelmer, sn - CEP 36036-900, Juiz de Fora, MG, Brazil; vinarc@gmail.com 4 University Herbarium, University of California, 1001 Valley Life Sciences Bldg. #2465, Berkeley, CA 94720-2465, U.S.A.; arsmith@berkeley.edu Abstract The fern family Blechnaceae, with about 250 species, has traditionally comprised one large genus, Blechnum, plus seven to nine smaller genera, most with fewer than 10 species. Several phylogenetic analyses strongly suggest that Blechnum in the traditional sense is not a monophyletic group. We propose a new classification for the family, with three subfamilies and 24 genera. All genera are described and new combinations are provided, with an estimate of species number for each genus. We also provide a key for the identification of the genera. Key words: Blechnum, eupolypods II, ferns, Lomaria, Diploblechnum, Struthiopteris, Woodwardia Introduction Blechnaceae is a subcosmopolitan fern family, comprising about 250 species and between five and nine genera as currently circumscribed (Kramer et al. 1990, Smith et al. 2006, Rothfels et al. 2012, Perrie et al. 2014). The plants are mostly terrestrial herbs, sometimes rheophytic, aquatic, arborescent, scandent, or even epiphytic (Sundue & Rothfels 2014, Rothfels et al. 2012). The family is characterized by creeping, ascending, or erect rhizomes, with non-clathrate scales; petioles with numerous vascular bundles forming a ring in cross section; fronds monomorphic to dimorphic; veins free to anastomosing; sori linear, generally parallel and adjacent to midveins, with introrse indusia (rarely exindusiate); sporangia pedicellate; spores reniform, monolete (Moran 1995a, Mickel & Smith 2004, Dittrich 2005). Blechnaceae has long been recognized as a family and is clearly monophyletic. The related family Onocleaceae could be merged with Blechnaceae since the former is sister to the latter, but we see no significant advantage in doing so. All broad molecular studies show this relationship, and in addition indicate strong affinities of Blechnaceae and Onocleaceae to Athyriaceae, Aspleniaceae, Thelypteridaceae, and Woodsiaceae (e.g., Hasebe et al. 1995, Schuettpelz et al. 2007, Rothfels et al. 2012). Several classifications have been presented for Blechnaceae, including one by Kramer et al. (1990), who recognized nine genera: Blechnum L., Brainea J.Sm., Doodia R.Br., Pteridoblechnum Hennipman, Sadleria Kaulf., Salpichlaena J.Sm., Steenisioblechnum Hennipman, Stenochlaena Ching, and Woodwardia Sm. Others treating the family in a comprehensive way have been Copeland (1947), who recognized eight genera, and Pichi Sermolli (1977), with 12 genera. Tryon & Tryon (1982) admitted nine genera (only three in the New World), and Wang et al. (2013) treated eight genera in China. On the basis of recent phylogenetic studies showing Blechnum to be polyphyletic (Nakahira 2000, Cranfill 2001, Shepherd et al. 2007, Perrie et al. 2014), several authors have acknowledged that the family needed a new classification (Smith et al. 2006, Rothfels et al. 2012). Aside from Blechnum s.l., by far the most species-rich genus, the existing recognized genera are mostly rather small. Using concepts adopted by Kramer et al. (1990), Doodia comprises ca. 15 species (Smith et al. 2006), most of Accepted by Marcus Lehnert: 7 Sept. 2016; published: 21 Sept. 2016 191 these distributed in Oceania (Parris 1972). Woodwardia contains about 14 species, which are largely confined to the northern hemisphere, in America and in Eurasia (Cranfill & Kato 2003). Salpichlaena has three endemic species in the Neotropics (Moran 1990, Giudice et al. 2008). Another small and rather isolated genus, Stenochlaena, comprises seven species in Africa and Asia (Holttum 1971, Chambers 2013). Brainea is monotypic (Kramer et al. 1990) and widely distributed in tropical Asia (Wang et al. 2013), while Sadleria comprises six species restricted to Hawaii (Palmer 1997). Pteridoblechnum and Steenisioblechnum, in Australia, have only one species each (Hennipman 1966, 1984, Kramer et al. 1990). Stenochlaena has been placed in Blechnaceae only recently by Lovis (1978) and Tryon & Tryon (1982); the genus has been treated in Pteridaceae or Stenochlaenaceae by some authors, e.g., Holttum (1954) and Ching (1978). Several smaller genera are better studied: these include Woodwardia, revised by Cranfill (2001) and Cranfill & Kato (2003), Brainea (Kramer et al. 1990), Doodia (Parris 1972), Sadleria (Palmer 1997), Salpichlaena (Giudice et al. 2008), Stenochlaena (Holttum 1971, Chambers 2013), and a recent segregate, Telmatoblechnum (Perrie et al., 2014). Blechnum, on the other hand, is treated in many floras and is currently the largest genus of the family with about 200 species (Rothfels et al. 2012). Tryon & Tryon (1982) estimated 50 species in the Americas, but based on the new species described for the Neotropics (e.g., by Moran 1992, 1995b, Moran & Smith 2005, Rojas-Alvarado 2006, Kessler et al. 2007, Ramos Giacosa 2010, Dittrich et al. 2012), and considering the vast areas still unexplored or poorly explored (e.g., the Amazon basin and extra-Amazonian areas in Colombia, Ecuador, Peru, Bolivia, and Brazil), we estimate that the number of species in the Americas exceeds, by far, the number presented by Tryon & Tryon (1982), as we show below, reaching at least 106 species. Blechnum was established by Linnaeus (1753) in his magnum opus, Species Plantarum. Since then, the genus has traditionally been divided on the basis of form of the sterile and fertile fronds: one group with monomorphic fronds, another having dimorphic fronds. Such a division, however, is artificial, and the genus as circumscribed today is clearly polyphyletic (Cranfill & Kato 2003, Schuettpelz & Pryer 2007, Shepherd et al. 2007, Rothfels et al. 2012, Gabriel y Galán et al. 2013, Perrie et al. 2014, Gasper et al. in press). Recently, some proposals have been made to treat Blechnum in somewhat revised ways. Perrie et al. (2014) performed molecular phylogenetic analyses resulting in the naming of Telmatoblechnum, with two species, and subsuming Pteridoblechnum and Steenisioblechnum within Blechnum, thus reducing the number of accepted genera in the family to seven. For Flora of China, Wang et al. (2013) recognized eight genera, among them Blechnidium, Struthiopteris, and Chieniopteris, while acknowledging that some of these had no molecular support. Based on molecular data (Gasper et al. in press), as well as morphological characters, spore ornamentation, and chromosome number, we here recognize 24 genera in the family (see below). Methods The identification key, notes, and synonyms are based on an analysis of type and non-type material from the following herbaria: B, BHCB, BM, CESJ, CRI, COL, ESA, FI, FURB, HB, HBR, HRCB, HUA, INPA, JOI, JPB, K, MBM, MEXU, MO, OUPR, P, PACA, PR, PMA, Q, QCA, QCNE, QPLS, R, RB, S, SI, SJRP, SP, SPF, UC, UEC, UPCB, WELT (on-line), as well as JSTOR Plants (http://plants.jstor.org/). Herbarium abbreviations follow Thiers (2015). Names listed in this treatment are basionyms, combinations in genera generally accepted in recent literature (mostly in Blechnum), and our new combinations. The characterizations of the genera, as well the names (accepted species) we now recognize, were made through examination of floras, taxonomic revisions, checklists, and publications dealing with recently described species. The names collected in those works where checked in Tropicos.org and IPNI. org. Neotropical floras and revisions consulted were: Antilles (Killip 1917, Kramer 1962, Proctor 1977, 1985, 1989), Argentina (Sota 1973, 1975), Brazil (Brade 1966, Sehnem 1968, Dittrich 2005, Dittrich et al. 2007, 2012, 2015), Central America (Stolze 1981, Moran 1995a), Chile (Marticorena & Rodríguez 1995, Aguiar et al. 2007, Ríos et al. 2009, Ríos 2015), Colombia (Alston 1957, Lellinger & Sota 1972), Ecuador (Sodiro 1883, 1893, Moran 1995b), French Guiana (Mori et al. 1997), Hawaii (Palmer 1997, 2003), Mexico (Smith 1981, Mickel & Beitel 1988, Mickel & Smith 2004), Peru (Tryon & Stolze 1993), Uruguay (Legrand & Lombardo 1958), Venezuela (Vareschi 1969, Smith 1995, Moran & Smith 2005, Akirov 2013). In addition, there are lists of species for Central and South America (Rolleri & Prada 2006a), Suriname (Kramer 1978), Brazil (Dittrich & Salino 2014), South Cone—Chile, Argentina, Paraguay, Uruguay, and Southern Brazil (Zuloaga et al. 2008). South American species with monomorphic leaves were reviewed by Murillo (1968), and the species with dimorphic leaves from Central and North America, as well as the Antilles, 192 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. were studied by Broadhurst (1912a, b); the Blechnum lherminieri complex was revised by Rojas-Alvarado (2008); and a natural classification was proposed by Tryon & Tryon (1982). Nearctic: Norte America and North Mexico (Cranfill 1993). Africa: Africa (Schelpe 1952), Southern Africa (Burrows 1990, Roux 2001, Crouch et al. 2011), Swaziland (Roux 2003). Asia: China (Wang et al. 2013), Taiwan (Chiou et al. 1975), Thailand (Boonkerd & Pollawatn 2004), Himalayas (Li et al. 2014), and Malesian regions (Chambers & Farrant 2001, Nooteboom 2012). Oceania: Australia (Tindale 1960, Chambers & Farrant 1993, 1995, 1999, Brownsey & Smith-Dodsworth 2000, Chambers 2007, Parris 2010), Cook Islands (Sykes 2016), Fiji (Brownlie 1977), Mascarene Islands (Austrey et al. 2008), Tasmania (Hooker & Ross 1860), New Caledonia (Brownlie 1969), New Zealand (Chambers & Farrant 1996a, 1998, Breitwieser et al. 2010). There is also a global classification of Blechnaceae, proposed by Kramer et al. (1990), and a thorough treatment of the circum-Antarctic species, Blechnum penna-marina (Poir.) Kuhn (Chambers & Farrant 1996b). Results Characters We discuss here some of the more important characters of the blechnoid genera we recognize, especially those used in the key and descriptions presented below. Some characters show great variation among and sometimes within the genera. Genera recognized in this treatment are similar to many other fern genera in that a single character is often insufficient for characterization; rather a suite of characters may be necessary to identify a particular plant to genus. In general, both vegetative and reproductive characters are highly plesiomorphic in the family, and homoplasy is rampant (Sundue & Rothfels 2014). This is similar to variation in many large fern clades, e.g., the grammitids in the Polypodiaceae (Ranker et al. 2004). Habit. Several growth habits are seen in Blechnaceae: most species are terrestrial, and the epiphytic habit appears in only a few species of some genera (Lomariocycas, Stenochlaena, and Blechnum), but there are also plants that climb by rhizomes (Lomaridium, Icarus, and Stenochlaena), plants that climb by twining indeterminate leaves (Salpichlaena), and plants with arborescent rhizomes (Brainea, Lomaria, Lomariocycas, Neoblechnum, and Sadleria), a habit that appears to have evolved multiple times (Sundue & Rothfels 2014). Oceaniopteris francii (Rosenst.) Gasper & Salino is the only truly aquatic member (Brownlie 1969, Veillon 1981) in the family, although species of Telmatoblechnum grow in swamps, their rhizomes and lower parts of fronds often under water. Rhizomes. Rhizome habit shows great variation in the family, from long- or short-creeping, to ascending, suberect, or fully erect. These extremes can even be found in a single genus, e.g., Diploblechnum, in which D. neglectum (F.M.Bailey) Gasper & V.A.O.Dittrich has long-creeping, cord-like rhizomes and D. fraseri (A.Cunn.) De Vol has narrow, erect rhizomes to 1 m tall (Cranfill 2001). In Lomariocycas, several species form erect, trunk-like caudices to 1 m tall, resembling the habit of some cycads (hence the genus name), especially species occuring in paramos. In open habitats and when cultivated, Neoblechnum brasiliense (Desv.) Gasper & V.A.O.Dittrich and Oceaniopteris gibba (Labill.) Gasper & Salino may also have trunks to 1 m tall (Hoshizaki & Moran 2001). Several other species-rich genera also have predominantly ascending to erect rhizomes, with shorter, narrower trunks, e.g., Parablechnum¸ Blechnum, and Austroblechnum. However, even in these genera, certain species have long- to short-creeping rhizomes. In some of the more isolated lineages, particularly the woodwardioid lineage (Anchistea, Lorinseria, and some Woodwardia spp.), as well as the stenochlaenoid lineage (Salpichlaena, Telmatoblechnum), rhizomes are predominantly long-creeping, with sparse scales, or the rhizomes are climbing (Stenochlaena). Several other blechnoid lineages also have longcreeping rhizomes, e.g., Blechnidium, Blechnopsis, and some species of Struthiopteris. In hemiepiphytic species, the rhizomes maintain contact with the soil and produce fertile fronds only after climbing, apparently when light and plant mass requirements are fulfilled. In Salpichlaena, it is the leaf rachis that twines into the trees, not the rhizomes, and mature fronds can reach easily 15 m into the canopy (Moran 1995a). Genera having predominantly or entirely long-creeping rhizomes generally are plants of temperate mesic forests or montane rain forests. In contrast, those genera having erect or suberect rhizomes, or stout, erect caudices, are generally plants of more open sites: Neoblechnum and Brainea, both monotypic, as well as Sadleria, Oceaniopteris, and Lomariocycas all exemplify this habit. Correspondingly, these five genera also generally have more coriaceous leaf blades than do species and genera that are predominantly forest-dwelling. Stolons. Stolons are common only in Blechnum (Dittrich et al. 2015), where this condition seems to be a synapomorphy and hence useful in identification; stolon-like outgrowths occur in a few species of Austroblechnum, CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 193 e.g., A. penna-marina, especially in groups growing at middle to higher elevations or on rocks, and also in Lomaria discolor. Cranfillia vulcanica has been reported as having creeping to erect rhizomes, sometimes forming short caudices, or, under some conditions, producing slender, creeping, stoloniferous rhizomes borne from the growing rhizome apex (Chambers & Farrant 2001). Rhizome scales. Rhizomes and stipe bases of members of Blechnaceae are always covered by triangular to acicular, mostly entire scales; however, in Lomaridium, the scales can be denticulate. Those genera having long, acicular (needlelike) scales, like Lomariocycas and Sadleria, are quite distinctive in also having these scales prominently thickened at their bases; when detached, such scales leave raised protuberances (stumps) on the stipe bases. Scales in some genera are prominently bicolorous, with a blackish mid-stripe, as in Neoblechnum, Oceaniopteris, and Lomariocycas. Scales in other species (genera) may be peltate and blackish at the point of attachment, as in some members of the New Zealand Parablechnum procerum complex (Chambers & Farrant 1998). In most other genera the scales are tan or brown, broadly lanceolate, and concentrated on rhizome apices and stipe bases. Leaf dimorphism. Traditionally, species of Blechnaceae have been divided into two main groups, based on having either monomorphic or dimorphic leaves. Dimorphic leaves are common in most genera, and the monomorphic condition is mostly restricted to species of Blechnum, the woodwardioid genera (Woodwardia and Anchistea), Telmatoblechnum, Blechnidium, Blechnopsis, Sadleria, Neoblechnum, Oceaniopteris, and Doodia. However, in several ordinarily dimorphic genera, there are exceptions, like Lomariocycas columbiensis and Parablechnum loxense (Tryon & Stolze 1993), P. monomorphum, and P. obtusum. In both genera, some plants or species can be subdimorphic, with laminar types somewhat (but not decidedly) dimorphic, i.e., the sporangia do not cover the entire surface of the lamina (dimorphic condition), but fertile blades are slightly different from the sterile ones. Trimorphy exists in Icarus filiformis, a monotypic genus. When in contact with soil, this species has small sterile leaves, and when climbing, much larger sterile leaves; the third leaf type, of fertile fronds, has greatly contracted pinnae (Allan 1961). Blade dissection. Most members of Blechnaceae have pinnate or pinnatifid blades; the apex of the blades is either conform and pinna-like or gradually reduced and pinnatifid. There are a few species with simple, entire blades (e.g., Blechnum lanceola and Austroblechnum difforme), or bipinnatifid blades, e.g., certain species of Sadleria, Diploblechnum, or Woodwardia unigemmata. Salpichlaena and Stenochlaena have pinnate-pinnatifid or bipinnate fertile blades, but the sterile blades are pinnate in Stenochlaena and bipinnate in Salpichlaena. According to Cranfill (2001), most species have persistent fertile fronds, but in Cranfillia and Diploblechnum, the fertile fronds senesce rapidly after spore release. Rapid senescence of fertile fronds of dimorphic species probably occurs in some species of Austroblechnum, e.g., A. lehmannii. Blades in various genera may be basally truncate (lacking reduced pinnae) as in most species of Parablechnum, Sadleria, and Woodwardia, or with proximal pinnae gradually to abruptly reduced to auricles, as in Austroblechnum, Blechnidium, Blechnopsis, Doodia, Struthiopteris, and other genera. Articulate pinnae. There are four species in three genera reported with articulate pinnae: Anchistea (monotypic), Telmatoblechnum (two species), and Parablechnum articulatum (Perrie et al. 2014). This last species is sister to two subclades in Parablechnum (Gasper et al. in press), one represented by Neotropical + African species and the other one by Oceanian/Malesian species. Pinna articulation is not reported for other members of the family, and is likely independently derived in genera where it occurs, as an adaptation to seasonal climate fluctuation (Moran 1995a). When examining dried specimens, there is a discrete, slightly raised disarticulation ring at the bases of articulate pinnae (e.g., in Telmatoblechnum serrulatum). Blade indument. Many kinds of hairs and scales are found in species of Blechnaceae, but most are essentially glabrous to glabrescent, e.g., the woodwardioid and stenochlaenoid lineages. Densely scaly species are found in Parablechnum and Lomariocycas, with large scales sometimes covering most of the laminar surfaces. In other genera, amorphous hyaline or tan scales are often present, but these may be deciduous, or lost in mature fronds. Lomaridium is glabrous, lacking hairs or scales, like most species of Blechnum s.s., but some species of the latter genus have conspicuous hyaline, multicellular hairs. When hairs are present in Blechnum and other genera, they are mostly on the stipes and rachises, rarely on laminar tissue. Species of Cranfillia have abundant hairs on the blades; the hairs may be blackish or hyaline, except in C. sampaioana, which has minute hairs in some plants. Blade color and texture. Young leaves of Blechnaceae are often reddish, the color produced by an anthocyanin (Crowden & Jarman 1974). When the leaves become adult, the laminae are generally green to yellow green, shiny, and opaque. The majority of species of Blechnaceae are concolorous when dried, but some species of Lomaria have discolorous blades—green adaxially and brownish abaxially. Some species of Austroblechnum also have discolorous blades, but less markedly than in Lomaria. In Lomaridium, the blades are often dark green adaxially, silvery green abaxially. Coriaceous blades are found in Lomariocycas, but this condition varies greatly in Blechnaceae, even among 194 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. species in the same genus, e.g., Austroblechnum, where the species like A. penna-marina, that grow in full sun, have coriaceous to subcoriaceous blades, and A. divergens, a forest species, has chartaceous or herbaceous blades. Pinna margins. Pinnae are generally slightly revolute at the margins, at least when dried, and strongly revolute (involute) in Lomariocycas and Cleistoblechnum. In Struthiopteris the pinna margins are entire and flat (not revolute), similar to species of Neoblechnum, Oceaniopteris, Icarus, and Doodia, but in these last four genera the pinna margins are usually crenate to serrate. In Blechnum, the pinna margins are finely denticulate. In Stenochlaenoideae and Woodwardioideae, the laminae are flat, but the margins crenulate to serrulate. Vivipary. Laminar buds are rare in Blechnaceae, occurring in few species in distantly related genera, e.g., Woodwardia, Salpichlaena, Parablechnum, and Cranfillia. Woodwardia prolifera is unique in bearing many small plants over the adaxial surface of the blades. Aerophores. Small tubercular or conical aeration structures, called aerophores (or pneumatophores; Bower 1923, 1926), are borne at the bases of pinnae, abaxial side; these seem to occur primarily on some (but not all) neotropical species of Parablechnum and one species of Parablechnum acanthopodum, from Goodenough Island, northeast coast of Papua. In addition, all, or nearly all, members of Blechnaceae have two whitish, lateral ventilation bands along the lengths of the stipes and continuing along the rachises; these bear copious stomata that presumably aid in aeration of young developing tissues (Davies 1991). In several species of Blechnaceae, especially those with prominent aerophores, copious amounts of mucilage cover the young croziers and early-developing fronds (Hennipman 1968). The taxonomic significance of these characters–aerophores and mucilage production–is poorly known and needs more study, as well the development of these structures. Sori and indusia. Sori in the family are usually continuous or nearly so and protected by elongate indusia that open toward the costae. Only two genera, Brainea and Stenochlaena, are exindusiate. When mature, the indusia often become lacerate and expose the sporangia: two exceptions are Salpichlaena and Cleistoblechnum, which have reflexed indusia that remain entire or erose and covering the sporaniga at maturity. Anchistea, Lorinseria, Woodwardia, and Doodia (Kramer et al. 1990) have so-called chain-like sori, i.e., sori follow the areolar veins, and then are interrupted. At maturity, chain-like sori may appear to form a continuous row. Acrostichoid sporangia (covering the abaxial surfaces of pinnae) rarely occur in Blechnaceae, and are found only in Stenochlaena. The acrostichoid condition is common in other genera outside Blechnaceae, e.g., in Elaphoglossum Schott ex J.Sm. (Dryopteridaceae) and Acrostichum L. (Pteridaceae), where the sori are borne not only on veins but on laminar tissue between veins. This condition caused Holttum (1949, 1971) to relate Stenochlaena to other acrostichoid genera. Chambers (2013), in the review of the genus, stated that the pinna margins reflex at maturity and the sori appear acrostichoid, a condition common in most dimorphic species of Blechnaceae and easily seen in Austroblechnum, Cranfillia, Parablechnum, Struthiopteris, and other genera, but in these genera, the sporangia, as can be seen in young leaves and developing sori, appear to be borne only on commissural veins, not on laminar tissue. In most Blechnaceae with dimorphic fronds, the fertile pinna margins reflex to expose the sporangia when the sporangia mature. The development of sporangia in Stenochlaena, whether truly on laminar tissue, needs further investigation developmentally. Chromosome numbers. Chromosome numbers in Blechnaceae range from x = 28–40, with most genera having base numbers between 31–35 (Manton 1959, Quinn 1961, Abraham et al. 1962, Roy & Holttum 1965, Walker 1966, 1973, 1985, Jarrett et al. 1968, Manton & Vida 1968, Ghatak 1977, Smith & Mickel 1977, Sota & Pazos 1983, Smith & Foster 1984, Kurita 1986, Nakato 1987, Raj & Manickam 1987, Singh & Roy 1988, Sankari Ammal & Bhavanandan 1989, Takamiya et al. 1992, Bidin 1995, Wagner 1995, Tindale & Roy 2002, Marcon et al. 2003, de Lange et al. 2004, Jara-Seguel et al. 2006, Murray & Lange 2013, Ebihara et al. 2014). Base chromosome numbers appear to be a good synapomorphy for some genera, including Salpichalena (x = 40), Diploblechnum (x = 27–28), Lomaridium (x = 28), Anchistea and Lorinseria (x = 35), and Woodwardia (x = mostly 34). A few genera and even some species have been reported to show variation in chromosome number, e.g., Parablechnum (x = 28, 31, 33), or Brainea insignis (x = 33, 35); however, additional counts are needed to assess whether such variation is real or the result of miscounts. Chromosome base numbers help separate some otherwise similar genera like Cleistoblechnum (x = 33) from Struthiopteris (x = 31 or 32). Diploids, triploids, tetraploids, and even higher ploidy levels (decaploids) are known in the family (see Nakato 1987, Tindale & Roy 2002). Hybridization also appears to be common in some genera, especially Blechnum s.s. (Walker 1985, Moran 1995a), and introgression was recorded by Sota & Pazos (1983); this may compound the problem of species delimitation. Classification. Most taxonomic proposals made for Blechnaceae define Blechnum very broadly, and hence it has almost always been considered as a very large genus (Tryon & Tryon 1982, Kramer et al. 1990). Wang et al. (2013) placed some species of Blechnum in previously named genera (as early as 1754, e.g., Struthiopteris), but pointed out CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 195 that the classification they adopted had no molecular support. Perrie et al. (2014), with a broad sample of species from Oceania, emphasized that a larger sample (which we use as the basis of this paper) would be necessary to recognize the clades recovered in their analysis. Based on this, they chose to lump Doodia and other genera in Blechnum. Taxonomic treatment Blechnaceae Newman, Hist. Brit. Ferns (ed. 2) 8. 1844. Plants perennial, terrestrials, epipetric, scandent or occasionally epiphytic, very rarely aquatic; rhizomes erect, decumbent, creeping, subarborescent to arborescent or scandent, slender to robust, sometimes stoloniferous, covered with non-clathrate scales, sometimes bearing mucilage; fronds monomorphic or dimorphic, rarely trimorphic, reddish when young; stipes not articulate, with two or more vascular bundles arranged in an arc, generally scaly proximally; blades entire to bipinnate; rachises grooved adaxially; pinnae articulate or not to the rachises, often reduced proximally, aerophores sometimes present at pinna bases, buds also sometimes present in pinna axils, rarely on adaxial laminar surfaces; veins free or anastomosing, lacking included veinlets, reaching the margins or ending a little before, tips sometimes enlarged, clavate (appearing as hydathodes) or rarely joined by a submarginal commissural vein (Salpichlaena); sori borne on a commissural vein parallel to the midvein or costa, or borne on the arches of the areolae, or acrostichoid; sori elongate, continuous or discontinuous, mostly not green; indusia usually present, introrse, absent in a few genera; spores monolete, reniform, variously ornamented; x = 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 40. Distribution:—Sub-cosmopolitan with about 267 spp, with two main centers of diversity, Neotropics and Oceania/Australia. Key to the Blechnaceae taxa 1. –. 2. –. 3. –. 4. –. 5. –. 6. –. 7. –. 8. –. 9. –. 10 –. 11. –. 12. –. 13. –. 14. –. 15. –. 16. Plants truly aquatic (submerged in water) ......................................................................................................... Oceaniopteris francii Plants terrestrial, epipetric, scandent or occasionally epiphytic, sometimes growing in swamps .....................................................2 Sori exindusiate or with pseudoindusia (recurved pinna margins).....................................................................................................3 Sori indusiate ......................................................................................................................................................................................4 Rhizomes erect, stout, trunk-like or forming stout caudices to about 1 m tall; fronds subdimorphic ...................... Brainea insignis Rhizomes long-creeping, climbing; fronds dimorphic ................................................................................................... Stenochlaena Sterile blades with at least partially anastomosing veins ...................................................................................................................5 Sterile blades with free veins ............................................................................................................................................................10 Pinnae articulate to rachises ..................................................................................................................................Anchistea virginica Pinnae not articulate to rachises .........................................................................................................................................................6 Blades pinnatisect, abruptly or subabruptly reduced proximally .................................................................. Blechnidium melanopus Blades simple, pinnate (at least proximally), or bipinnate .................................................................................................................7 Pinna margins finely denticulate ..........................................................................................................................................Blechnum Pinna margins entire, serrate, serrulate, crenate, or spinulose............................................................................................................8 Areoles arranged in a single order (row) on each side of costae, all areoles of similar size and shape ...................................Doodia Areoles clearly arranged in first and second order rows on each side of costae, the first order fertile, the second order sterile and of different shape and size ......................................................................................................................................................................9 Fronds strongly dimorphic, the fertile ones with greatly contracted pinnae ........................................................ Lorinseria areolata Fronds monomorphic........................................................................................................................................................Woodwardia Blades climbing via twining rachises ..............................................................................................................................Salpichlaena Blades not climbing via twining rachises, if climbing via rhizomes ................................................................................................11 Rhizomes stoloniferous ....................................................................................................................................................................12 Rhizomes not-stoloniferous ..............................................................................................................................................................15 Fronds monomorphic to subdimorphic ................................................................................................................................Blechnum Fronds dimorphic..............................................................................................................................................................................13 Rhizome apices and stipe bases bearing linear-lanceolate scales; blades discolorous; rachises deeply grooved ..................Lomaria Rhizomes bearing by lanceolate or ovate scales; blades concolorous; rachises shallowly grooved ................................................14 Pinnae each with an obtuse apex; rachises mostly glabrous or with diminute hairs; fertile fronds taller than sterile ones ................. ....................................................................................................................................................................................Austroblechnum Pinnae each with an acute apex; rachises pilose, with persistent, fine, uniseriate hairs; fertile and sterile fronds similar in size....... ............................................................................................................................................................................. Cranfillia vulcanica Rhizomes long-creeping, climbing ...................................................................................................................................................16 Rhizomes erect, short- or long-creeping, sometimes forming erect caudices, but not climbing .....................................................17 Rhizomes clothed with long-lanceolate, denticulate or entire scales; blades deeply pinnatisect or pinnate in the proximal half, with 196 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. –. 17. –. 18. –. 19. –. 20. –. 21. –. 22. –. 23. –. 24. –. 25. –. 26. –. 27. –. 28. –. 29. –. 30. –. 31. –. 32. –. 33. –. 34. –. vestigial or auricles pinnae proximally; sterile pinna margins entire ...............................................................................Lomaridium Rhizomes clothed with linear-lanceolate, squarrose scales; blades pinnate, with sterile terrestrial blades smaller than epiphytic ones (di- to trimorphic), 2–6 pairs somewhat reduced proximally; sterile pinna margins serrulate ..................................Icarus filiformis Pinnae articulate to rachises .............................................................................................................................................................18 Pinnae not articulate to rachises .......................................................................................................................................................19 Pinna margins serrate; rhizomes long-creeping; fronds monomorphic to subdimorphic........................................ Telmatoblechnum Pinna margins entire to crenate; rhizomes erect; fronds dimorphic ............................................................................. Parablechnum Blades pinnate-pinnatifid or bipinnatifid..........................................................................................................................................20 Blades simple, pinnatifid, or 1-pinnate.............................................................................................................................................21 Rhizomes erect, subarborescent, stout; fronds monomorphic ................................................................................................ Sadleria Rhizomes long-creeping to short-creeping, if caudices erect then slender; dimorphic or slightly dimorphic ............ Diploblechnum Veins immersed in leaf tissue, almost invisible (except in Lomariocycas aurata) ..........................................................................22 Veins readily visible .........................................................................................................................................................................23 Rhizomes erect, stout, trunk-like, densely clothed with bicolorous, acicular, curved, basally thickened scales .......... Lomariocycas Rhizomes short, ascending or suberect, bearing at apices a tuft of orange-brown, glabrous, lanceolate scales .................................. ..................................................................................................................................................................Cleistoblechnum eburneum Proximal pinnae clearly stalked; blade apices conform to subconform ...........................................................................................24 Proximal pinnae adnate, eventually subpetiolulate; blade apices pinnatifid ....................................................................................25 Blades truncate, without vestigial auriculate pinnae proximally; pinnae falcate, oblong-linear, lanceolate; indusia subentire to lacerate or erose ............................................................................................................................................................ Parablechnum Blades truncate with many vestigial auricles proximal to large pinnae; pinnae linear to narrowly elliptic, often with a basiscopic lobe; indusia entire at maturity ......................................................................................................................................... Blechnopsis Fronds monomorphic................................................................................................................................... Neoblechnum brasiliense Fronds dimorphic or subdimorphic ..................................................................................................................................................26 Rhizome scales linear-lanceolate or acicular, or scales sometimes pectinate and broadened only at the very base, otherwise acicular for nearly their entire length .............................................................................................................................................................27 Rhizome scales lanceolate, ovate, sometimes acuminate .................................................................................................................29 Blades discolorous; rachises deeply grooved .........................................................................................................................Lomaria Blades concolorous; rachises shallowly grooved .............................................................................................................................28 Rhizomes short-creeping to erect, sometimes trunk-like, bearing black, entire scales; blades slightly reduced proximally; pinna margins entire to serrate or dentate................................................................................................................................ Oceaniopteris Rhizomes short-creeping or elongate, bearing brown to dark brown, entire or sparingly toothed scales; blades very gradually reduced proximally with proximal pinnae auriculate; pinnae margins entire ...................................................................Struthiopteris Stipes, rachises, costae, and veins pilose ..............................................................................................................................Cranfillia Stipes, rachises, costae, and veins glabrous .....................................................................................................................................30 Rhizomes erect, forming narrow trunks ...........................................................................................................................................31 Rhizomes erect, but not forming narrow trunks ...............................................................................................................................32 Veins each ending in a clavate hydathode ..................................................................................................................Austroblechnum Veins not ending in hydathodes, all running to the pinna margins ...................................................................................Lomaridium Pinnae petiolulate; blade apices radicant ..............................................................................................................................Cranfillia Pinnae sessile or adnate; blade apices not radicant ..........................................................................................................................33 Blades truncate proximally, without auriculate pinnae below the longest pinnae................................................................Cranfillia Blades gradually or abruptly reduced to auricles proximally, or blades simple ...............................................................................34 Blades simple, pinnatifid, or pinnate, if pinnate, then pinnae oblong to suborbicular and margins crenate to serrate ........................ ....................................................................................................................................................................................Austroblechnum Blades pinnate; pinnae oblong-linear to linear-falcate; margins entire ..........................................................................Struthiopteris Blechnaceae subfamily Woodwardioideae Gasper, V.A.O.Dittrich & Salino, subfam. nov.—Type: Woodwardia Sm., Mém. Acad. Roy. Sci. Turin 5: 411. 1793. Diagnosis: Plants with monomorphic or dimorphic fronds; blades pinnatifid, pinnate-pinnatifid or bipinnatifid, with margins serrulate to spinulose; veins anastomosing, forming a regular series of areoles along costae and costules, clearly visible in the first and second orders. Plants terrestrial, rarely epipetric; rhizomes short- to long-creeping, erect or decumbent, slender to stout, densely clothed with brownish scales; fronds monomorphic or dimorphic; stipes scaly, at least proximally; blades pinnatifid, pinnate-pinnatifid, or bipinnatifid, rarely simple, truncate proximally, with margins serrulate; buds on blades present or not, if present then usually in axils of distal pinnae; aerophores absent; rachises and costae scaly to glabrescent; veins anastomosing and without included veinlets in both sterile or fertile fronds, forming a regular series of areoles along the costae and costules; sori arranged on each side of the costae and costules, in chain-like rows or sometimes confluent and long-linear, borne on the outer arc of costal areoles, usually immersed and covered by the paracostal indusia; x = 31, 34, 35. Species number, comments, and distribution:—Three genera and 15 species, with a largely north-temperate, CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 197 amphioceanic distribution. Some authors segregate Chieniopteris Ching, from eastern Asia (Wang et al. 2013), but without molecular support (Li et al. 2014, Gasper et al. in press). The genera were reviewed by Cranfill (2001) and Cranfill and Kato (2003). Anchistea C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 431. 1851.—Type: Anchistea virginica (L.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5 6: 431. 1851. Figs. 1A, 5A. Plants terrestrial; rhizomes long-creeping, non-stoloniferous, slender, clothed with dark brown, shiny, ovate, entire scales; fronds monomorphic; stipes 3–4 mm diam., about as long as blades, castaneous to dark purple-black proximally, tan to stramineous distally, with few scales proximally and glabrous abaxially; blades concolorous, lanceolate, 1pinnate-pinnatifid, not reduced proximally, apices pinnatifid; rachises sparsely scaly to glabrescent; buds absent; aerophores absent; pinnae sessile to subpetiolulate, articulate to rachises, narrowly lanceolate, with denticulate or serrulate margins; veins anastomosing, without included veinlets in both sterile or fertile fronds, forming single rows of areoles along costae and costules, ultimate (marginal) veins free; sori oblong to linear, often borne along both sides of costal and costular areoles, chain-like but often appearing confluent in mature sori, indusia membranaceus, often hidden by sporangia; x = 35. Species number, comments, and distribution:—One species in North America (eastern U.S.A. and southeastern Canada). The genus is easily recognized by having long-creeping rhizomes, 1-pinnate-pinnatifid blades, pinnae articulate to the rachises, and areolate venation. FIGURE 1. General appearance of the three genera of Blechnaceae subfamily Woodwardioideae. A. Anchistea virginica (P01513597); B. Lorinseria areolata (P01509531), C. Woodwardia spinulosa (P01557309). Vouchers are indicated by herbarium barcodes. 1. Anchistea virginica (L.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 431. 1851.—Blechnum virginicum L., Mant. Pl. 2: 307. 1771.—Woodwardia virginica (L.) Sm., Mém. Acad. Roy. Sci. Turin 5: 412. 1793. Lorinseria C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 432. 1851, non Lorinsera Opiz, 1839, a genus that seems not to be generally recognized, in Apiaceae; if the two are considered homonymous, then Lorinseria needs conservation.—Lectotype (chosen by J. Smith, Hist. Filic. 310. 1875): Lorinseria areolata (L.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 432. 1851. Figs. 1B, 5B. Plants terrestrial; rhizomes long-creeping, non-stoloniferous, slender (ca. 5 mm diam.), densely clothed with brownish, ovate to broadly lanceolate, entire scales; fronds dimorphic, the fertile reddish brown; stipes slender, long, scaly at least proximally, sparsely scaly distally; blades concolorous, ovate to deltate, the sterile deeply pinnatifid, the fertile 1-pinnate, not reduced proximally, apices pinnatifid; rachises with scattered, ovate, light brown scales; buds absent; aerophores absent; pinnae not articulate to rachises, the sterile adnate, narrowly elliptic, margins serrulate, the fertile contracted, linear, attenuate at bases; veins anastomosing without included veinlets in areoles in both sterile and fertile fronds, forming a regular series of two or more rows of areoles between costae and pinna margins, veins free 198 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. toward margins; sori linear-oblong, deeply sunken into blades, confined to costal areoles on each side of the costae, indusia membranaceus, the outer edge tucked around sporangia; x = 35. Species number, comments, and distribution:—One species in eastern North America (U.S.A. and Nova Scotia, Canada). It is easily recognized by the long-creeping rhizomes and the deeply pinnatifid sterile blades. The fertile blades are 1-pinnate and contracted. 1. Lorinseria areolata (L.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5 6: 432. 1851.—Acrostichum areolatum L., Sp. Pl. 2: 1069. 1753.—Woodwardia areolata (L.) T.Moore, Index Fil. xlv. 1857. Woodwardia Sm., Mém. Acad. Roy. Sci. Turin 5: 411. 1793.—Lectotype (chosen by J. Smith, Hist. Fil. 310. 1875): Woodwardia radicans (L.) Sm. Figs, 1C, 5C. Chieniopteris Ching, Acta Phytotax. Sinica 9: 1964.—Type: Chieniopteris harlandii (Hook.) Ching, based on Woodwardia harlandii Hook. Plants terrestrial, rarely epipetric; rhizomes short- to long-creeping, erect or decumbent, slender to stout, nonstoloniferous, densely clothed with brownish, lanceolate to linear-lanceolate scales, with entire margins or few teeth; fronds monomorphic; stipes stout, long, dark brown proximally, stramineous distally, scaly at least proximally, then with sparse scales and/or hairs; blades concolorous, lanceolate, oblong-lanceolate, ovate-lanceolate, rarely simple, pinnatifid, pinnate-pinnatifid, or to bipinnatifid, not reduced proximally, apices pinnatifid; rachises scaly to glabrescent; buds present or not; aerophores absent; pinnae not articulate to rachises, oblong-lanceolate, margins entire to spinulose; veins anastomosing and without included free veinlets in both sterile or fertile fronds, forming a regular series of areoles along the costae and costules, ultimate veins free; sori long-linear, sunken, usually confined to costular areoles, arranged on each side of the costae and costules, indusia membranaceus, discrete; x = 31, 34. Species number, comments, and distribution:—Woodwardia is a north-temperate, amphioceanic genus comprising approximately 13 species. The genus can be distinguished from the other genera in Woodwardioideae by the monomorphic leaves and the usually short-creeping to suberect rhizomes. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Woodwardia auriculata Blume, Enum. Pl. Javae 2: 196. 1828. Woodwardia fimbriata Sm., in Ress, Cycl. 38. 1818. Woodwardia harlandii Hook., Fil. Exot. 3: pl. 7. 1857. Woodwardia japonica (L.f.) Sm., Mém. Acad. Roy. Sci. Turin 5: 411. 1793.—Blechnum japonicum L. f., Suppl. Pl. 445. 1781[1782]. Woodwardia kempii Copel, Philipp. J. Sci. 3: 280. 1908. Woodwardia magnifica Ching & P.S.Chiu, Acta Phytotax. Sin. 12: 247–248. 1974. Woodwardia martinezii Maxon ex Weath., Amer. Fern J. 39: 88. 1949. Woodwardia orientalis Sw., J. Bot. (Schrader) 1800(2): 76. 1801. Woodwardia prolifera Hook. & Arn., Bot. Beechey Voy. 275, pl. 56. 1841[1838]. Woodwardia radicans (L.) Sm., Mém. Acad. Roy. Sci. Turin 5: 412. 1793.—Blechnum radicans L., Mant. Pl. 2: 307–308. 1771. Woodwardia semicordata Mickel & Beitel, Mem. New York Bot. Gard. 46: 403. 1988. Woodwardia spinulosa M.Martens & Galeotti, Nouv. Mém. Acad. Roy. Sci. Bruxelles 15: 64. 1842. Woodwardia unigemmata (Makino) Nakai, Bot. Mag. (Tokyo) 39(461): 103. 1925.—Woodwardia radicans var. unigemmata Makino, J. Jap. Bot. 2: 7. 1918. Blechnaceae subfam. Stenochlaenoideae (Ching) J.P.Roux, Conspect. South. Afr. Pteridophyta, 156. 2001, emend. Gasper, V.A.O.Dittrich & Salino—Stenochlaenaceae Ching, Acta Phytotax. Sin. 16(4): 18. 1978.—Type: Stenochlaena J.Sm., J. Bot. 3: 401. 1841. Plants epiphytic or terrestrial; rhizomes long-creeping, scandent or not; fronds monomorphic to dimorphic; stipes glabrous to hairy; blades pinnate to bipinnate, sometimes pilose; buds absent (present in Salpichalena hookeriana); rachises with determinate or indeterminate growth (Salpichlaena), glabrous; pinnae articulate to rachises or not (Salpichlaena), glabrous or with a pair of glands at their bases (Stenochlaena); veins free or with inconspicuous areoles near the costae, simple or furcate, with the ends connected by a marginal vein in Salpichlaena; sori (sporangia) acrostichoid, without indusia in Stenochlaena, indusia linear in other genera. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 199 Species number, comments, and distribution:—About 12 species, with Salpichlaena in the Neotropics, Stenochlaena in Asia, Malesia, Australia, and Africa; Telmatoblechnum is pantropical. Salpichlaena J.Sm., in Hooker, Gen. Fil.: pl. 93. 1842.—Type: Salpichlaena volubilis (Kaulf.) J.Sm., J. Bot. (Hooker) 4: 168. 1841. Figs. 2A, 5D. Plants terrestrial, climbing by twining rachises; rhizomes long-creeping, non-stoloniferous, bearing dark brown, lanceolate, entire scales; fronds monomorphic to dimorphic, climbing, with indeterminate growth, reaching more than 15 m; stipes stout, long, stramineous, with few scales; blades linear, bipinnate, truncate proximally, apices conform, concolorous; rachises glabrous; buds present or absent; aerophores absent; pinnae not articulate to rachises, petiolulate, linear to linear-lanceolate, flat, margins entire to crenulate; veins simple or furcate, with the ends connected by a marginal vein; sori linear, parallel to commissural veins, protected by elongate indusia, these lacerate or strongly vaulted and virtually tubular, breaking up into narrow recurved strips as the mature spores are released; x = 40. Species number, comments, and distribution:—Salpichlaena is a neotropical genus with three species (Moran 1990, Giudice et al. 2008), and is characterized by the rachises with indeterminate growth (reaching 15 m; Moran 1995a) and bipinnate blades. 1. 2. 3. Salpichlaena hookeriana (Kuntze) Alston, Bull. Misc. Inform. 1932: 312. 1932.—Spicanta hookeriana Kuntze, Revis. Gen. Pl. 2: 821. 1891. Salpichlaena thalassica Grayum & R.C.Moran, Ann. Missouri Bot. Gard. 77: 591. 1990. Salpichlaena volubilis (Kaulf.) J.Sm., J. Bot. (Hooker) 4: 168. 1841.—Blechnum volubile Kaulf., Enum. Filic. 159. 1824. FIGURE 2. General appearance of the three genera of Blechnaceae subfamily Stenochlaenoideae. A. Salpichlaena volubilis (MO3588318); B. Stenochlaena scandens (P01420182); C. Telmatoblechnum serrulatum (MO2003917). Vouchers are indicated by herbarium barcodes. Stenochlaena J.Sm., in Hooker, J. Bot. 3: 401. 1841.—Lectotype (designated by Pfeiffer, Nom. 2: 1274. 1874): Stenochlaena scandens J.Sm., nom. illeg. [= Stenochlaena palustris (Burm.f.) Bedd., 1876]. Figs. 2B, 5E. Lomariobotrys Fée, Mém. Foug., 5. Gen. Filic. 45. 1852—Type: Lomariobotrys tenuifolia (Desv.) Fée, Mém. Fam. Foug. 5: 46. 1852 = [Stenochlaena tenuifolia (Desv.) T.Moore] Plants terrestrial, rarely epiphytic; rhizomes long-creeping, climbing, non-stoloniferous, stout, clothed when young with brown peltate or linear-acuminate scales, these entire or subentire; fronds dimorphic, determinate; stipes stout, long, stramineous, red-brown, sometimes with a few persistent scales, glabrous distally or slightly hairy adaxially; 200 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. sterile blades ovate to oblong-lanceolate, pinnate, truncate proximally, apices conform, concolorous; fertile blades pinnate to bipinnate (in S. tenuifolia); rachises glabrous; buds absent; aerophores absent; pinnae not articulate to rachises, sessile to subsessile, oblong-ovate to lanceolate, serrate; veins with a unique series of inconspicuous areoles, the other ones simple to furcate; sori acrostichoid, exindusiate; x = 37. Species number, comments, and distribution:—Seven species, distributed in Asia and Africa. The acrostichoid condition, as well as the exindusiate sori, both reported for this genus, need further investigation. 1. 2. 3. 4. 5. 6. 7. Stenochlaena areolaris (Harr.) Copel., Philipp. J. Sci., 2C: 406. 1908.—Lomaria areolaris Harr., J. Linn. Soc., Bot. 16: 28. 1877. Stenochlaena cumingii Holttum, Amer. Fern J. 71: 122. 1971. Stenochlaena mildbraedii Brause, Bot. Jahrb. Syst. 53: 384. 1915. Stenochlaena milnei Underw., Bull. Torrey Bot. Club 33: 38. 1906. Stenochlaena palustris (Burm.f.) Bedd., Suppl. Ferns S. Ind., 26, pl. 201. 1876.—Polypodium palustre Burm. f., Fl. Indica 234. 1768. Stenochlaena riauensis Sofiyanti et al., Bangl. J. Pl. Taxon. 22: 137. 2015. Stenochlaena tenuifolia (Desv.) T.Moore, Gard. Chron. 193. 1856.—Lomaria tenuifolia Desv., Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 326. 1811. Telmatoblechnum Perrie, D.J.Ohlsen & Brownsey, Taxon 63: 755. 2014.—Type: Telmatoblechnum serrulatum (Rich.) Perrie, D.J.Ohlsen & Brownsey, Taxon 63: 755. 2014. Figs. 2C, 5F. Blechnopsis sect. Diafnia C.Presl, Epimel. Bot. 119. 1851. Plants terrestrial, rarely epipetric; rhizomes long-creeping, non-stoloniferous, stout, clothed with bicolorous (atrocostate), lanceolate, entire scales; fronds monomorphic or slightly dimorphic, determinate; stipes stout, long, smooth and glabrous, with dark bases, stramineous distally, with a few scales similar to those of rhizomes; blades concolorous, pinnate, oblong to lanceolate, truncate proximally, apices conform; rachises glabrous or with amorphous, hyaline scales; buds absent; aerophores absent; pinnae articulate to rachises, linear to linear-oblong, margins serrate; veins free, 1–3-furcate, ending at the pinna margins; sori linear, close to costae, with narrow indusia, margins erose or lacerate; x = 36. Species number, comments, and distribution:—Telmatoblechnum comprises two species, one in the Neotropics and another in Australasia/Oceania. The genus is one of the few in the family with articulate pinnae. Plants grow in swamps, open wetlands, and wet savannas. 1. 2. Telmatoblechnum indicum (Burm.f.) Perrie, D.J.Ohlsen & Brownsey, Taxon 63: 755. 2014.—Blechnum indicum Burm.f., Fl. Indica 231. 1768. Telmatoblechnum serrulatum (Rich.) Perrie, D.J.Ohlsen & Brownsey, Taxon 63: 755. 2014.—Blechnum serrulatum Rich., Actes Soc. Hist. Nat. Paris 1: 114. 1792. Blechnaceae subfam. Blechnoideae Gasper, V.A.O.Dittrich & Salino, subfam. nov.—Type: Blechnum occidentale L., Sp. Pl 2: 1077. 1753. Diagnosis: Rhizomes various, sometimes forming caudices, stoloniferous or not; fronds monomorphic to usually dimorphic (rarely trimorphic); blades pinnatifid, pinnate, or bipinnate (rarely simple and undivided); buds and aerophores rare; veins free to areolate; sori linear, borne along commissural veins, indusiate or rarely exindusiate. Plants terrestrial, epiphytic, climbing by rhizomes, or rarely aquatic; rhizomes short- to long-creeping, erect, sometimes trunk-like, occasionally climbing, stoloniferous or not, clothed with basifixed scales; fronds monomorphic, subdimorphic, or dimorphic, rarely trimorphic, determinate; stipes not articulate to rachises, stramineous to dark brown, pilose, scaly, or glabrescent; blades pinnatisect, pinnate-pinnatifid, or bipinnate (rarely simple and entire), glabrous or rarely pilose; rachises glabrous or scaly, rarely densely pilose, but commonly very scaly; buds and aerophores absent or present in some species; pinna margins entire to serrate, not articulate (except P. articulatum), adnate, sessile or petiolulate; veins free to areolate; sori linear, borne on commissural veins, indusiate or rarely exindusiate. Species number, comments, and distribution:—About 239 species, most diverse in the southern hemisphere, but a few species in north-temperate regions. We recognize 18 genera in this subfamily, with strong molecular and morphological support as reported by Gasper et al. (in press). CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 201 Austroblechnum Gasper & V.A.O.Dittrich, gen. nov.—Type: Austroblechnum penna-marina (Poir.) Gasper & V.A.O.Dittrich. Figs. 3A, 5G. Diagnosis: Rhizomes bearing concolorous or bicolorous scales; fronds dimorphic, blades with reduced pinnae proximally; pinnae partially or totally adnate, with veins ending in enlarged and readily visible hydathodes. Plants terrestrial or epipetric; rhizomes erect, ascending, short- or long-creeping, stoloniferous or not, moderately stout, sometimes forming small caudices, apices with brown to reddish brown, concolorous, lanceolate or ovate, acuminate, entire scales (scales rarely bicolorous with pale margins); fronds dimorphic; stipes slender or stout, atropurpureus to dark or yellowish, usually longer in fertile fronds, proximally with scales similar to those on the rhizomes and sometimes with uniseriate hairs, mostly glabrous distally; blades concolorous, lanceolate-acuminate, narrowly elliptic or ovate, pinnatisect to pinnate, rarely entire, reduced proximally or blades truncate, sometimes with vestigial pinnae, apices pinnatifid or pinnatisect; rachises glabrous or bearing a few scales; buds rarely present; aerophores absent; pinnae partially or totally adnate to rachises, falcate, oblong or ensiform, entire or crenate to serrate, plane to slightly revolute at margins; veins free, rarely simple, 1–2 furcate, with clavate ends readily visible, forming hydathodes adaxially; sori linear, indusia entire to erose or fimbriate; x = 33. Species number, comments, etymology, and distribution:—Ca. 39 species with tropical to south-temperate distributions. Most species from middle to high elevations are usually in forests, or in open rocky sites. Most characteristic are the veins ending in enlarged and readily visible hydathodes. The name, used by Raymond Cranfill in his unpublished notes, was adopted because of the austral distribution of the species. Austroblechnum is most closely related to Blechnum s.s., Cranfillia, and Icarus (Gasper et al. in press). 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Austroblechnum aequatoriense (A.Rojas) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum aequatoriense A. Rojas, Mét. Ecol. Sist. 3(Supl. 1): 9–10, f. 1a–c. 2008. Austroblechnum andinum (Baker) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria andina Baker, in Hooker & Baker, Syn. Fil., 2: 482. 1874.—Blechnum andinum (Baker) C.Chr., Index Filic. 150. 1905. Austroblechnum ascendens (A.Rojas) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum ascendens A.Rojas, Mét. Ecol. Sist. 3 (Supl. 1): 10, f. 2a, b. 2008. Austroblechnum asperum (Klotzsch) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria aspera Klotzsch, Linnaea 20: 344. 1847.—Blechnum asperum (Klotzsch) J.W.Sturm, Abh. Naturhist. Ges. Nürnberg 2: 172. 1858. Austroblechnum bakeri (C.Chr.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum bakeri C.Chr., Index Filic. 151. 1905. Austroblechnum banksii (Hook.f.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria banksii Hook.f., FI. Nov.-Zel. 2:31, t. LXXVI. 1845.—Blechnum banksii (Hook.f.) Mett. ex Diels, Nat. Pflanzenfam. 1(4): 249. 1899. Austroblechnum colensoi (Hook.f.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum colensoi Hook.f., Victorian Naturalist 72: 159. 1956. Austroblechnum corralense (Espinosa) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum corralense Espinosa, Revista Chilena Hist. Nat. 36: 92. 1932. Austroblechnum difforme (Copel.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum difforme Copel., Bernice P. Bishop Mus. Bull. 59: 13, t. 3. 1929. Austroblechnum divergens (Kunze) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria divergens Kunze, Linnaea 9: 57. 1834.—Blechnum divergens (Kunze) Mett., Ann. Sci. Nat. Bot., sér. 5, 2: 225. 1864. Austroblechnum doodioides (Brack.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria doodioides Brack., U.S. Expl. Exped., Filic., 16: 124. 1854, non Blechnum doodioides Hook., Fl. Bor.-Amer. 2(12): 263. 1840. Austroblechnum durum (T.Moore) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria dura T.Moore, Gard. Chron. 1866. 290. 1866.—Blechnum durum (T. Moore) C.Chr., Index Filic. 153. 1905. Austroblechnum fernandezianum (Looser) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum blechnoides G.Kunkel var. fernandezianum Looser, Revista Univ. (Santiago) 32(2): 61. 1947.—Blechnum fernandezianum (Looser), Prada & Rolleri, Acta Bot. Malac. 31: 35. 2006. Austroblechnum integrifrons (Bonap. ex Rakotondr.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum integrifrons Bonap. ex Rakotondr., Adansonia, sér. 3, 35: 171–173, f. 12, 13[map]. 2013. Austroblechnum jamaicense (Broadh.) Gasper & V.A.O.Dittrich, comb. nov.—Struthiopteris jamaicensis Broadh., Bull. Torrey Bot. Club 39: 266, t. 21. 1912.—Blechnum jamaicense (Broadh.) C.Chr., Index Filic., Suppl. 1, 16. 1913. Austroblechnum keysseri (Rosenst.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum keysseri Rosenst., Repert. Spec. Nov. Regni Veg. 12: 527. 1913. Austroblechnum lanceolatum (R.Br.) Gasper & V.A.O.Dittrich, comb. nov.—Stegania lanceolata R.Br., 202 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. Prodr. 152. 1810.—Blechnum lanceolatum (R.Br.) J.W.Sturm, Enum. Pl. Vasc. Crypt. Chil. 25. 1858, non Raddi (1819).—Blechnum chambersii Tindale, in Beadle et al., Fl. Sydney Region. ed. 2, 86. 1986. Austroblechnum lechleri (T.Moore) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria lechleri T.Moore, Gard. Chron. 1866: 634. 1866, non Blechnum lechleri Mett. (1859) = Parablechnum lechleri (Mett.) Gasper & Salino—Blechnum mochaenum Kunkel, Nova Hedwigia 13: 340. 1967. Austroblechnum lehmannii (Hieron.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum lehmannii Hieron., Bot. Jahrb. Syst. 34: 473. 1904. Austroblechnum lherminieri (Bory) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria lherminieri Bory ex Kunze, Farrnkräuter 173. 1845.—Blechnum lherminieri (Bory) C.Chr., Index Filic. 156. 1905. Austroblechnum leyboldtianum (Phil.) Gasper & V.A.O. Dittrich, comb. nov.—Lomaria leyboldtiana Phil., Anales Univ. Chile 18: 68. 1861.—Blechnum leyboldtianum (Phil.) C.Chr., Index Filic. 156. 1905. Austroblechnum melanocaulon (Brack.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria melanocaulon Brack., U.S. Expl. Exped., Filic. 16: 122. 1854.—Blechnum melanocaulon (Brack.) T.C.Chambers & P.A.Farrant, Blumea 46: 318. 2001. Austroblechnum membranaceum (Colenso ex Hook.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria membranacea Colenso ex Hook., Sp. Fil. 3. 1860.—Blechnum membranaceum (Colenso ex Hook.) Mett., Nat. Pflanzenfam. 1(4): 249. 1899. Austroblechnum microphyllum (Goldm.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria microphylla Goldm., Nov. Actorum Acad. Caes. Leop.-Carol. German. Nat. Cur. 16, Suppl. 1, 460. 1843.—Blechnum microphyllum (Goldm.) C.V.Morton, Amer. Fern J. 60: 103. 1970. Austroblechnum norfolkianum (Heward) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria norfolkiana Heward, London J. Bot. 1. 122 nota. 1842.—Blechnum norfolkianum (Heward) Maiden, Proc. Linn. Soc. New South Wales 28: 732. 1904. Austroblechnum nukuhivense (E.D.Br.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum nukuhivense E.D.Br., Bernice P. Bishop Mus. Bull. 89: 69, f. 13. 1931 Austroblechnum organense (Brade) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum organense Brade, Arq. Inst. Biol. Veg. 2(1): 2–3, pl. 1, f. 3, pl. 3. 1935. Austroblechnum patersonii (R.Br.) Gasper & V.A.O.Dittrich subsp. patersonii, comb. nov.—Stegania patersonii R.Br., Prodr. 152. 1810.—Blechnum patersonii (R.Br.) Mett. subsp. patersonii, Fil. Hort. Bot. Lips. 64, t. 4, f. 4–10. 1856. Austroblechnum patersonii (R.Br.) Gasper & V.A.O.Dittrich subsp. queenslandicum (T.C.Chambers & P.A.Farrant) Gasper & V.A.O.Dittrich, comb. nov.—Stegania patersonii R.Br., Prodr. 152. 1810.—Blechnum patersonii (R.Br.) Mett. subsp. queenslandicum T.C.Chambers & P.A.Farrant, Telopea 6: 177. 1995. Austroblechnum penna-marina (Poir.) Gasper & V.A.O.Dittrich, comb. nov.—Polypodium penna-marina Poir., in Lam., Encycl. 5: 520. 1804.—Blechnum penna-marina (Poir.) Kuhn, Filic. Afr. 92. 1868. Austroblechnum pinnatifidum (A.Rojas) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum pinnatifidum A.Rojas, Mét. Ecol. Sist. 3(Supl. 1): 20–21, f. 5a–c. 2008. Austroblechnum raiateense (J.W.Moore) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum raiateense J.W.Moore, Bernice P. Bishop Mus. Bull. 102: 9. 1933. Austroblechnum squamipes (Hieron.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum lanceolatum var. squamipes Hieron., Bot. Jahrb. Syst. 22: 381. 1896.—Blechnum squamipes (Hieron.) M.Kessler & A.R.Sm., Amer. Fern J. 97: 80. 2007. Austroblechnum stoloniferum (Mett. ex E.Fourn.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria stolonifera Mett. ex E.Fourn., Mexic. Pl. 1: 113. 1872.—Blechnum stoloniferum (Mett. ex E.Fourn.) C.Chr., Index Filic. 154. 1905. Austroblechnum vallegrandense (M.Kessler & A.R.Sm.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum vallegrandense M.Kessler & A.R.Sm., Amer. Fern J. 97: 79. 2007. Austroblechnum vieillardii (Mett.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum vieillardii Mett., Ann. Sci. Nat. Bot., sér. 4, 15: 70. 1861. Austroblechnum wardiae (Mickel & Beitel) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum wardiae Mickel & Beitel, Mem. New York Bot. Gard. 46: 89, f. 122A,B, 125A. 1988. Austroblechnum ×aggregatum (Colenso) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria aggregata Colenso, Trans. & Proc. New Zealand Inst. 20. 223. 1888.—Blechnum aggregatum (Colenso) Tindale, Proc. Linn. Soc. New South Wales 85: 254. 1960. [Blechnum chambersii Tindale × Blechnum membranaceum (Colenso ex Hook.) Mett. ex Diels] Austroblechnum ×rodriguezii (Aguiar, Quintanilla & Amigo) Gasper & V.A.O.Dittrich, comb. nov.— Blechnum ×rodriguezii Aguiar, Quintanilla & Amigo, Amer. Fern J. 97: 228, fig. 1. 2008. [Blechnum corralense Espinosa × Blechnum mochaenum G. Kunkel subsp. mochaenum] CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 203 FIGURE 3. General appearance of the genera of Blechnaceae subfamily Blechnoideae (A-D). A. Austroblechnum penna-marina (FURB06706); B. Blechnidium melanopus (P02439094); C. Blechnopsis orientalis (P01406555); D. Blechnum occidentale (FURB06701); E. Brainea insignis (P01482127); F. Cleistoblechnum eburneum (P00627565); G. Cranfillia fluviatilis (P01606472); H. Diploblechnum fraseri (P01557366); I. Doodia aspera (P01618184). Vouchers are indicated by herbarium barcodes. 204 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. Blechnidium T.Moore, Index. Fil. CLV. 1860; Brit. Ferns Nat. Pr. [Moore], octavo ed., 2. 210. 1860.—Type: Blechnidium melanopus (Hook.) T.Moore, Brit. Ferns 210. 1860; Index Fil. CLV. 1860. Figs. 3B, 5H. Plants terrestrial or epipetric; rhizomes long-creeping, slender (ca. 3–4 mm diam.), non-stoloniferous, bearing dense golden to dark-brown, lanceolate or ovate-lanceolate, entire scales; fronds monomorphic; stipes slender, long, dark brown to atropurpureous, with few scales proximally, glabrous toward apices; blades concolorous, lanceolate, pinnatisect, abruptly or subabruptly reduced proximally, apices pinnatifid; rachises glabrous; buds absent; aerophores absent; pinnae adnate, usually falcate, entire, slightly revolute at margins; veins partially anastomosing, with costal areoles, ultimate veinlets free, usually forking; sori linear, adjacent and closely parallel to costae, indusia entire, linear; x = 31. Species number, comments, and distribution:—One species in China (including Taiwan) and India. The genus is characterized by the discrete areoles adjacent to the costae and resembles Blechnum s.s., but the rhizomes are longcreeping and non-stoloniferous, and phylogenetic analyses do not show them to be closely related (Gasper et al. in press); rather, Blechnidium is closely related to Brainea and Struthiopteris (Gasper et al. in press). 1. Blechnidium melanopus (Hook.) T.Moore, Brit. Ferns 2: 210. 1860.—Blechnum melanopus Hook., Sp. Fil. 3: 64, pl. 161. 1859. Blechnopsis C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 475. 1851.—Type: Blechnopsis orientalis (L.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 477. 1851. Figs. 3C, 5I. Plants terrestrial; rhizomes erect to suberect, non-stoloniferous, stout, sometimes forming caudices, densely clothed with concolorous or weakly bicolorous brown, linear, entire scales; fronds monomorphic; stipes stout, dark reddish or purple-brown, bearing scales at bases similar to those of rhizomes, sometimes with very fine pale hairs distally; blades concolorous, ovate to deltate, pinnate, proximally abruptly reduced with many pairs (10+) of auriculate pinnae, apices subconform; rachises glabrous or with sparse irregular hairs and slender reddish brown scales; buds absent; aerophores absent; pinnae sessile or subpetiolulate, linear to narrowly elliptic, entire, sometimes revolute at margins, often with a basiscopic lobe; veins free, 1-furcate, each ending in a small hydathode adaxially; sori linear, indusiate, indusia entire at maturity, reflexed and not covering sporangia; x = 32, 33, 34. Species number, comments, and distribution:—Two species, in Asia, Malesia, Japan, Australia, and Pacific islands. Blechnopsis is distinguished by the long stipes, with many auriculate pinnae (more than 10 pairs), and usually with basiscopic pinna lobes adnate. It is closely related to Sadleria and Cleistoblechnum (Gasper et al. in press). 1. 2. Blechnopsis finlaysoniana (Wall. ex Hook. & Grev.) C.Presl, Epimel. Bot. 116. 1851.—Blechnum finlaysonianum Wall. ex Hook. & Grev., Pl. Voy. Russes Monde, t. 225. 1831. Blechnopsis orientalis (L.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 477. 1851.—Blechnum orientale L., Sp. Pl. 2: 1077. 1753. Blechnum L., Sp. Pl. 2: 1077. 1753.—Type: Blechnum occidentale L., Sp. Pl. 2: 1077. 1753. Figs. 3D, 6A. Distaxia C.Presl, Epimel. Bot. 110. 1851.—Type: Distaxia fraxinea (Willd.) C.Presl, based on Blechnum fraxineum Willd. Mesothema C.Presl, Epimel. Bot. 111. 1851.—Blechnum sect. Mesothema (C.Presl) J.Sm., Hist. Fil. 301. 1875.—Type: Mesothema australe (L.) C.Presl, based on Blechnum australe L. Plants terrestrial, epipetric, or rarely epiphytic; rhizomes erect to ascending, decumbent or short-creeping, stoloniferous, slender to rather stout, bearing linear or linear-oblong, pale or dark brown, concolorous or bicolorous, entire scales (or scales with few minute teeth); fronds monomorphic or subdimorphic; stipes slender, short (sometimes absent) or long, stramineous to pale brown or atropurpureus, with scales similar to those of rhizomes proximally, and sometimes with multicellular, catenate, hyaline hairs toward apices; blades concolorous, lanceolate to deltate-lanceolate, entire (rare), pinnatisect or 1-pinnate, gradually reduced or truncate proximally, apices pinnatifid or conform; rachises glabrous or pilose, without scales; buds absent; aerophores absent; pinnae sessile, adnate or subpetiolulate, lanceolate, oblonglanceolate, ensiform, margins entire, finely denticulate; veins rarely partially anastomosing, usually free and then 1–3 furcate, each ending near margins in an enlarged tip; sori linear, continuous or rarely interrupted along the costae, indusia slightly erose or ciliate; x = 31. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 205 Species number, comments, and distribution:—Ca. 25 species, mostly neotropical, a few in southern Africa. With the segregation of the other genera, Blechnum s.s. is characterized by stoloniferous rhizomes, monomorphic to subdimorphic fronds, and finely denticulate pinna margins. Blechnum is closely related to Austroblechnum, Cranfillia and Icarus (Gasper et al. in press). 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. Blechnum anthracinum R.C.Moran, Novon 2: 132. 1992. Blechnum appendiculatum Willd., Sp. Pl., ed. 4, 5(1): 410. 1810. Blechnum arcuatum J.Rémy ex Gay, Fl. Chil. 6: 477. 1853. Blechnum areolatum V.A.O.Dittrich & Salino, Syst. Bot. 37: 40, figs. 1–3. 2012. Blechnum asplenioides Sw., Kongl. Vetensk. Acad. Handl. 1817(1): 72, t. 3, f. 3. 1817. Blechnum auriculatum Cav., Descr. Pl. 262. 1802. Blechnum australe L., Mant. Pl. 130. 1767. Blechnum austrobrasilianum de la Sota, Bol. Soc. Argent. Bot. 16: 248. 1975. Blechnum fraxineum Willd., Sp. Pl., ed. 4, 5(1): 413. 1810. Blechnum gracile Kaulf., Enum. Filic. 158. 1824. Blechnum gracilipes (Rosenst.) M.Kessler & A.R.Sm., Amer. Fern J. 97: 80. 2007.—Blechnum blechnoides var. gracilipes Rosenst., Repert. Spec. Nov. Regni Veg. 9: 343. 1911. Blechnum guayanense A.Rojas, Mét. Ecol. Sist. 3(1): 36–37, f. 1, 3C, D. 2008. Blechnum hastatum Kaulf., Enum. Filic. 161. 1824. Blechnum heringeri Brade, Sellowia 18: 87. 1966. Blechnum laevigatum Cav., Descr. Pl. 263. 1802. Blechnum lanceola Sw., Kongl. Vetensk. Acad. Handl. 1817(1): 71, t. 3, f. 2. 1817. Blechnum longipilosum V.A.O.Dittrich & Salino, Syst. Bot. 37: 40, figs. 1–3. 2012. Blechnum ludificans Herter, Revista Sudamer. Bot. 8: 162. 1950. Blechnum malacothrix Maxon & C.V.Morton, Bull. Torrey Bot. Club 66: 40. 1939. Blechnum meridense Klotzsch, Linnaea 20: 349. 1847. Blechnum occidentale L., Sp. Pl. 2: 1077. 1753. Blechnum polypodioides Raddi, Opusc. Sci. 3: 294. 1819. Blechnum punctulatum Sw., J. Bot. (Schrader) 1800(2): 74. 1801. Blechnum punctulatum Sw. var. atherstonii R.Sim, Ferns S. Afr., ed. 2, 183, t. 79. 1915. Blechnum punctulatum Sw. var. intermedium R.Sim, Ferns S. Afr, ed. 2, 185, t. 80. 1915. Blechnum punctulatum Sw. var. krebsii R.Sim, Ferns S. Afr., ed. 2, 185, t. 81. 1915. Blechnum ×antillanum Proctor, Brit. Fern Gaz. 9: 214. 1965. [Blechnum appendiculatum Willd. × Blechnum meridense Klotzsch] Blechunm ×caudatum Cav., Descr. Pl. 262. 1802. [Blechnum occidentale L. × Blechnum gracile Kaulf.] Blechnum ×confluens Schltdl. & Cham., Linnaea 5: 613. 1830. [Blechnum occidentale L. × Blechnum polypodioides Raddi] Blechnum ×leopoldense (Dutra) V.A.O.Dittrich & Salino, Phytotaxa 231: 217. 2015. [Blechnum auriculatum Cav. × Blechnum occidentale L.] Brainea J.Sm., Cat. Kew Ferns 5. 1856. Type: Brainea insignis (Hook.) J.Sm., Cat. Kew Ferns 5. 1856. Figs. 3E, 6B. Bowringia Hook., Hooker’s J. Bot. Kew Gard. Misc. 5: 237. 1853.—Type: Bowringia insignis Hook. Plants terrestrial; rhizomes (caudices) erect, stout, trunk-like, to about 1 m tall, to 10 cm diam., non-stoloniferous, clothed with shiny dark brown, linear, entire scales, each with an attenuate or uniseriate tip; fronds subdimorphic; stipes stout, long, brownish, scales at bases similar to those of rhizomes, glabrous distally; blades bicolorous, ellipticor deltate-lanceolate, pinnate, truncate or very slightly narrowed proximally, apices pinnatifid; rachises abaxially with small scales along costae and veins, or glabrescent; buds absent; aerophores absent; pinnae sessile or petiolulate, linear to narrowly oblong, crenate to serrulate, slightly revolute at margins; veins free or with a costal row of areoles in sterile and fertile pinna, then simple or 1- or 2-furcate; sori linear, borne along costal veins, exindusiate; x = 33, 35. Species number, comments, and distribution:—Only one species, occurring in China, southeast Asia, and Malesia. This is a small arborescent fern, with subdimorphic fronds and exindusiate sori. Brainea insignis is one of the species in Blechnaceae with areolate venation, but the areoles are close to the costae and subtriangular, in contrast to the shapes of costal areoles in other genera in the family. This genus is closely related to Blechnidium and Struthiopteris (Gasper et al. in press). 206 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. 1. Brainea insignis (Hook.) J.Sm., Cat. Kew Ferns 5. 1856.—Bowringia insignis Hook., Hooker’s J. Bot. Kew Gard. Misc. 5: 237–238, pl. 2. 1853. Cleistoblechnum Gasper & Salino, gen. nov.—Type: Cleistoblechnum eburneum (Christ) Gasper & Salino, Bull. Acad. Int. Géogr. Bot. 1902: 233, fig. c. Figs. 3F, 6C. Diagnosis: Rhizomes bearing at apices a tuft of orange-brown scales; fronds slightly dimorphic, blades proximally with pinnae reduced to small auricles; pinnae adnate, strongly revolute; sori linear, remaining enclosed by erosemargined indusia at maturity. Plants terrestrial; rhizomes short, ascending or suberect, non-stoloniferous, slender, bearing at apices a tuft of orange-brown, glabrous, lanceolate, entire scales, some of these with a discrete, well-defined, darkened, atropurpureous mid-stripe; fronds slightly dimorphic, the fertile ones a bit longer, and with narrower, more widely spaced pinnae that are narrowed at their bases (vs. broader in sterile fronds); stipes short, ca. 5–10 cm long, slender, stramineous to tan, with scales confined to the very base, similar to those of rhizomes; blades thickened, concolorous, pinnatisect, linearoblanceolate, the pinnae reduced in the proximal 1/4–1/3 to small auricles ca. 1–2 mm long, 3–5 mm broad, apices pinnatifid; rachises glabrous; buds absent; aerophores absent; pinnae adnate, oblong to narrowly deltate, margins entire but strongly revolute; veins inconspicuous or completely hidden in the subcoriaceous laminae, free, furcate, not reaching laminar margins; sori linear, remaining enclosed by erose-margined indusia at maturity; x = 33. Species number, comments, etymology, and distribution:—One species with two varieties, endemic to Taiwan and mainland China. Cleistoblechnum resembles Struthiopteris, from which it is distinguished by slightly dimorphic fronds, the segment margins strongly inrolled, and the much more coriaceous blades. This is closely related to Blechnopsis and Sadleria (Gasper et al. in press). Chambers and Farrant (1996b) reported that the sori remain enclosed by erose indusia at maturity, a condition that suggests the generic name. 1. 2. Cleistoblechnum eburneum (Christ) Gasper & Salino var. eburneum, comb. nov.—Blechnum eburneum Christ, Bull. Acad. Int. Géogr. Bot. 1902: 233, fig. c. Spicantopsis eburnea (Christ) Tagawa, Acta Phytotax. Geobot. 9: 88. 1940. 1940. Cleistoblechnum eburneum (Christ) Gasper & Salino var. obtusum (Tagawa) Gasper & Salino, comb. nov.—Spicantopsis eburnea (Christ) Tagawa var. obtusa Tagawa in Acta Phytotax. Geobot. 9: 88. 1940. Cranfillia Gasper & V.A.O.Dittrich, gen. nov.—Type: Cranfillia fluviatilis (R.Br.) Gasper & V.A.O.Dittrich. Figs. 3G, 6D. Diagnosis: Rhizomes suberect or erect, bearing oblong-attenuate or acuminate, brown to black scales; fronds dimorphic; rachises and costae pilose with multicellular hairs, these black or hyaline, to 2 mm long. Plants terrestrial; rhizomes short-creeping to usually suberect or erect, stoloniferous or not, slender to stout, clothed with reddish brown to blackish, sometimes bicolorous, lanceolate or oblong-attenuate, entire scales with acuminate tips; fronds dimorphic; stipes slender or stout, short to long, stramineous to dark brown, scaly proximally, often abundantly hairy, or hairs sometimes sparse or absent; blades concolorous, linear-oblong to deltate, pinnate or deeply pinnatifid proximally, pinnatifid distally, proximally truncate or with gradually to subabruptly reduced pinnae; rachises scaly and often pilose, the hairs uniseriate, septate, sometimes sparse; buds absent or rarely present (in C. sprucei); aerophores absent; pinnae subpetiolulate proximally or often becoming fully adnate distally, oblong to lanceolate, sometimes falcate, entire to crenate or dentate along margins; veins free, 1- or 2-furcate, terminating adaxially in small submarginal hydathodes; sori linear, indusia more or less entire, sometimes with uniseriate hairs; x = 33. Species number, comments, etymology, and distribution:—12 species, three in the Neotropics, the remainder in Oceania. This genus is characterized by usually pilose rachises and costae, with exception of C. sampaioana, where hairs are very tiny and scarce. The genus honors Raymond Cranfill, one of the first researchers to study Blechnaceae using molecular data; his notes advanced and inspired major portions of this work. Cranfillia is closely related to Austroblechnum, Blechnum, and Icarus (Gasper et al. in press). 1. 2. Cranfillia fluviatilis (R.Br.) Gasper & V.A.O.Dittrich, comb. nov.—Stegania fluviatilis R.Br., Prodr. 1: 152. 1810.—Blechnum fluviatile (R.Br.) Lowe ex Salomon, Nomencl. Gefässkrypt. 115. 1883. Cranfillia fullagari (F.Muell.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria fullagarii F.Muell., Fragm. 8: 157. 1874., as Lomaria fullageri.—Blechnum fullagarii (F.Muell.) C.Chr., Index Filic. 154. 1905. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 207 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Cranfillia geniculata (T.C.Chambers & P.A.Farrant) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum geniculatum T.C.Chambers & P.A.Farrant, Telopea 5: 329. 1993. Cranfillia glabrescens (T.C.Chambers & Sykes) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum glabrescens T.C.Chambers & Sykes, Flora Cook Islands 68(–69). 2016. Cranfillia hirsuta (Rosenst.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum hirsutum Rosenst., Repert. Spec. Nov. Regni Veg. 9: 74. 1910. Cranfillia longicauda (C.Chr.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum longicauda C.Chr., Ark. Bot. 10(2): 10, pl. 1. 1910. Cranfillia nigra (Colenso) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria nigra Colenso, Tasm. Journ. Nat. Sci. 1: 375. 1841.—Blechnum nigrum (Colenso) Mett., Ann. Sci. Nat. Bot., sér. 4, 15: 69. 1861. Cranfillia opaca (Mett.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum opacum Mett., Ann. Sci. Nat. Bot., sér. 4, 15: 69. 1861. Cranfillia pilosa (Brack.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria pilosa Brack., U.S. Expl. Exped., Filic. 16: 125, t. 15. 1854.—Blechnum pilosum (Brack.) Brownlie, Beih. Nova Hedwigia 55: 320. 1977. Cranfillia sampaioana (Brade) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum sampaioanum Brade, Arq. Inst. Biol. Veg. 1: 225 1: 225. 1935. Cranfillia sprucei (C.Chr.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum sprucei C.Chr., Index Filic. 160. 1905. Cranfillia vulcanica (Blume) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria vulcanica Blume, Enum. Pl. Javae 202. 1828.—Blechnum vulcanicum (Blume) Kuhn, Ann. Mus. Bot. Lugduno-Batavi 4: 284. 1869. Diploblechnum Hayata, Bot. Mag. (Tokyo) 41: 702. 1927.—Type: Diploblechnum fraseri (A.Cunn.) De Vol, Fl. Taiwan 1: 153. 1975. Figs. 3H, 6E. Pteridoblechnum Hennipman, Blumea 13: 397. 1966.—Type: Pteridoblechnum neglectum (F.M.Bailey) Hennipman. Steenisioblechnum Hennipman, Blumea 30: 17. 1984.—Type: Steenisioblechnum acuminatum (C.T.White & Goy) Hennipman. Plants terrestrial; rhizomes slender, long- to short-creeping, or caudices erect, densely clothed at apices with bicolorous, linear-acuminate or lanceolate, entire or sparingly toothed scales; fronds dimorphic or slightly dimorphic; stipes slender, short, brown to reddish, densely scaly proximally, fewer persistent scales distally; blades concolorous, ovate to narrowly elliptic, pinnate to deeply pinnatifid, or bipinnatisect to bipinnate, usually becoming bipinnatifid distally, proximal pinnae gradually to abruptly reduced with one or two pairs of pinnae, or abruptly reduced to winged lobes extending down rachis, apical portions of the blades pinnatifid; rachises with sparse scales; buds sometimes present in axils of distal pinnae; aerophores absent; pinnae subpetiolulate to adnate, narrowly linear to narrowly elliptic, lanceolate, slightly revolute, margins subentire to crenate; veins free, 1-furcate, each ending in a clavate hydathode or (in D. neglectum) anastomosing and forming polygonal areoles, these in ca. 2 rows between costae and pinna margins; sori linear, indusiate, indusia subentire to erose, reflexed at maturity and not covering sporangia; x = 27, 28. Species number, comments, and distribution:—Six species, in Malesia, Australia, and Oceania. The species usually have narrow, erect rhizomes (sometimes over 1 m tall) that may eventually collapse and thus appear to be long-creeping, as reported by Cranfill (2001). The blades are pinnate to deeply pinnatifid or bipinnatisect to bipinnate, usually becoming bipinnatifid distally, and the basal pinnae gradually to abruptly reduced or the stipes winged. Diploblechnum is closely related to the Lomariocycas clade, plus the Neoblechnum-Oceaniopteris-Doodia clade and the Parablechnum clade (Gasper et al. in press). 1. 2. 3. 4. 5. Diploblechnum acuminatum (C.T.White & Goy) Gasper & V.A.O.Dittrich, comb. nov.—Leptochilus acuminatus C.T.White & Goy, Victorian Naturalist 54: 150. 1938.—Pteridoblechnum acuminatum (C.T.White & Goy) Hennipman, Proc. Roy. Soc. Queensland 87: 98. 1976.—Blechnum reticulatum R.K.Wilson & Bayly, Taxon 63: 755. 2014. Diploblechnum diversifolium (Mett.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum diversifolium Mett., Ann. Sci. Nat. Bot., sér. 4, 15: 71. 1861. Diploblechnum fraseri (A.Cunn.) De Vol, Fl. Taiwan 1: 153. 1975.—Lomaria fraseri A.Cunn., Companion Bot. Mag. 2: 364. 1836.—Blechnum fraseri (A.Cunn.) Luerss., Flora 1876: 292. Diploblechnum lenormandii (Baker) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria lenormandii Baker, Syn. Fil. (Hooker & Baker) 181. 1867.—Blechnum lenormandii (Baker) Diels, Nat. Pflanzenfam. 1(4): 249. 1899. Diploblechnum neglectum (F.M.Bailey) Gasper & V.A.O.Dittrich, comb. nov.—Acrostichum neglectum 208 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. 6. F.M.Bailey, Proc. Linn. Soc. New South Wales 5: 32. 1880.—Pteridoblechnum neglectum (F.M.Bailey) Hennipman, Blumea 13: 397. 1966.—Blechnum neglectum (F.M.Bailey) R.K.Wilson & Bayly, Taxon 63: 755. 2014. Diploblechnum rosenstockii (Copel.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum rosenstockii Copel., Univ. Calif. Publ. Bot. 12. 394. 1931, non Blechnum rosenstockii de la Sota, Darwiniana 18: 254. 1973. Doodia R.Br., Prodr. Fl. Nov. Holl.: 151. 1810.—Lectotype (designated by J. Smith, Hist. Fil. 309. 1875): Doodia aspera R.Br. Figs. 3I, 6F. Plants terrestrial; rhizomes erect to ascending, sometimes stoloniferous, slender, clothed with black to brown, lanceolate to linear-lanceolate, entire scales; fronds monomorphic or dimorphic; stipes slender, mostly short, usually dark proximally and stramineous on rachises, scaly, with scales similar to those of rhizomes, usually glabrescent; blades concolorous, linear-lanceolate, lanceolate-acuminate, deeply pinnatifid to pinnate, truncate or with reduced, auriculate pinnae proximally, apices pinnatifid or sub-conform; rachises sometimes with scales; buds absent; aerophores absent; pinnae sessile or adnate, lanceolate, sometimes falcate, ovate to linear, margins serrate-dentate; veins with one or three series of areoles, the first series between veinlets of different forks, the second between veinlets of the same fork and sometimes also like the first series, the third, if present, the same as the first; sori in a single or several rows on both sides of the costae, borne on areolar veins, short and discrete or ±continuous, indusia linear, entire to repand; x = 32. Species number, comments, and distribution:—About 19 species, in Australia, New Zealand, Pacific Islands to Hawaii. Doodia is characterized by having erect to ascending rhizomes and areolate venation, forming distinct series; fronds are monomorphic or dimorphic. It is closely related to Neoblechnum and Oceanoptris (Gasper et al. in press). 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. Doodia aspera R.Br., Prodr. 151. 1810. Doodia australis Parris, Fl. Australia 48: 710. 1998. Doodia brackenridgei Carruth. ex Seem., Fl. Vit. 352. 1873. Doodia caudata (Cav.) R.Br., Prodr. 151. 1810.—Woodwardia caudata Cav., Descr. Pl. 264. 1802. Doodia dissecta Parris, Fl. Australia 48: 711. 1998. Doodia dives Kunze, Bot. Zeitung (Berlin) 6: 144. 1848. Doodia gracilis Copel., Univ. Calif. Publ. Bot. 14: 362. 1929. Doodia heterophylla (F.M.Bailey) Domin, Bibliotheca Bot. 85: 121. 1915.—Doodia aspera var. heterophylla F.M.Bailey, Fern World Australia 51. 1881. Doodia hindii Tindale ex T.C.Chambers, Telopea 12: 257. 2008. Doodia kunthiana Gaudich., Voy. Uranie, Bot. 401, t. 14. 1829. Doodia linearis J.Sm., Ferns Brit. For. 199. 1866. Doodia marquesensis E.D.Br., Bernice P. Bishop Mus. Bull. 89: 73, t. 16. 1931. Doodia maxima J.Sm. ex C.Chr., Index Filic. 243. 1906. Doodia media R.Br., Prodr. 151. 1810. Doodia milnei Carruth., Fl. Vit. [Seemann] 352. 1873. Doodia mollis Parris, New Zealand J. Bot. 18: 145. 1980. Doodia paschalis C.Chr., Nat. Hist. Juan Fernandez 2: 48, f. 1a–c 1920[1921]. Doodia scaberula Parris, Blumea 24: 505, f. 1. 1978. Doodia squarrosa Colenso, Trans. & Proc. New Zealand Inst. 13: 382. 1881. Icarus Gasper & Salino, gen. nov.—Type: Icarus filiformis (A.Cunn.) Gasper & Salino. Figs. 4A, 6G. Diagnosis: Rhizomes long-creeping, climbing trees; fronds di- or trimorphic; larger pinnae short-stalked; veins free, furcate. Plants terrestrial, climbing by rhizomes; rhizomes long-creeping, climbing, non-stoloniferous, slender (2–4 mm diam.), densely clothed with bicolorous, dark brown, linear-lanceolate, squarrose scales; fronds di- or trimorphic, with different sterile fronds when climbing; stipes slender, relatively short, but longer in ones borne on climbing rhizomes, stramineous to tan, with a few scales similar to those of rhizomes proximally, with scattered scales to glabrescent distally; blades concolorous, lanceolate to narrow-oblong, with sterile terrestrial blades smaller than epiphytic ones, 2–6 pinna pairs somewhat reduced proximally, apices pinnatifid; rachises bearing scattered brownish scales and moderately dense, hyaline, flexuous, septate hairs 0.2–0.5 mm long; buds absent; aerophores absent; pinnae narrowly triangular, truncate at bases, sessile or short-petiolate, dentate-serrulate or minutely crenulate along margins; veins free, simple or furcate, each ending in a submarginal hydathode; sori linear, indusia brown, continuous, erose at margins, reflexed at maturity; x = 33. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 209 FIGURE 4. General appearance of the genera of Blechnaceae subfamily Blechnoideae (G-S). A. Icarus filiformis (WELT P009478); B. Lomaria nuda (P01557820); C. Lomaridium fragile (MEXU 149093); D. Lomariocycas aurata (QCA7004842); E. Neoblechnum brasiliense (FURB06585); F. Oceaniopteris cartilaginea (P01630912). G. Parablechnum cordatum (FURB06639); H. Sadleria pallida (MEXU 956078); I. Struthiopteris spicant (P01658104). Vouchers are indicated by herbarium barcodes. 210 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. Species number, comments, etymology, and distribution:—One species, endemic to New Zealand. This is a unique genus in the Blechnaceae, having trimorphic leaves. When in contact with soil, this species has small sterile leaves, and when climbing, much larger sterile leaves; the third leaf type, of fertile fronds, has greatly contracted pinnae (Allan 1961). The dentate-serrulate or minutely crenulate pinna margins and the presence of adaxial hydathodes are other distinguishing characters. This is closely related to Austroblechnum, Blechnum, and Cranfillia (Gasper et al. in press). This name was coined by Raymond Cranfill in his unpublished notes, and we have decided to adopt it. 1. Icarus filiformis (A.Cunn.) Gasper & Salino, comb. nov.—Lomaria filiformis A. Cunn., Companion Bot. Mag. 2: 363. 1837.—Blechnum filiforme (A.Cunn.) Ettingsh., Denkschr. Kaiserl. Akad. Wiss., Math.-Naturwiss. Kl. 24: 21, t. 6 f. 5. 1864. Lomaria Willd., Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 3: 160. 1809.—Lectotype (designated by J. Smith, Hist. Fil. 303. 1875): Lomaria nuda (Labill.) Willd., Sp. Pl. ed. 4, 5(1): 289. 1810. Figs. 4B, 6H. Stegania R.Br., Prod. Nov. Holl. 152. 1810.—Lomaria sect. Stegania (R.Br.) J.Sm., Hist. Fil. 304. 1875.—Type: Stegania nuda (Labill.) R.Br., based on Onoclea nuda Labill. [= Blechnum nudum (Labill.) Luerss.] Plants terrestrial; rhizomes erect, stout, sometimes forming small trunks, stoloniferous or not, clothed with bicolorous or concolorous, dark brown or blackish, linear-lanceolate to acicular, entire scales, these brown with a blackened mid-stripe; fronds dimorphic; stipes stout, long, brown to blackish, with scales like those of rhizomes, but smaller, scaly, pilose, or glabrous; blades lanceolate or oblong-elliptic, pinnate or pinnatisect, gradually reduced proximally, proximal pinnae auriculate, apices pinnatisect, discolorous (adaxial side dark green, abaxial side brownish in dried state); rachises with a few scales on abaxial surfaces, or glabrous; buds absent; aerophores absent; pinnae adnate to subpetiolulate, oblong, linear to lanceolate, plane to slightly revolute at the entire or minutely crenulate margins; veins free, 1- to 2-furcate, tips ending at pinna margins, sometimes ending in hydathodes adaxially, or slightly enlarged; sori linear, indusia continuous, lacerate or erose at maturity; x = 28. Species number, comments, and distribution:—This widely dispersed genus comprises six species, and occurs in South America, South Africa, Australia, and New Caledonia. Lomaria has historically been a name applied to species with dimorphic leaves, differing from Blechnum s.s., which has monomorphic leaves. The genus is characterized by having deeply grooved rachises and discolorous blades; two species with green spores have been reported (Lloyd & Klekowski, 1970, Sundue & Rothfels 2014). Lomaria is closely related to Lomaridium plus a clade formed by Austroblechnum, Blechnum, Icarus, and Cranfillia (Gasper et al. in press). 1. 2. 3. 4. 5. 6. Lomaria brunea (M.Kessler & A.R.Sm.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum bruneum M.Kessler & A.R.Sm., Amer. Fern J. 97: 71. 2007. Lomaria discolor (G.Forst.) Willd., Sp. Pl., ed. 4, 5(1): 410. 1810.—Blechnum discolor Keyserl., Polyp. Herb. Bunge 66. 1873. Lomaria inflexa Kunze, Farrnkräuter 1: 150, t. 65. 1844.—Blechnum inflexum (Kunze) Kuhn, Filic. Afr. 92. 1868. Lomaria nuda (Labill.) Willd., Sp. Pl., ed. 4, 5(1): 289. 1810.—Onoclea nuda Labill., Nov. Holl. Pl. 2: 96, pl. 246. 1806.—Blechnum nudum (Labill.) Mett., Flora 59: 292. 1876. Lomaria oceanica (Rosenst.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum attenuatum var. oceanicum Rosenst., Repert. Spec. Nov. Regni Veg. 10: 159. 1911.—Blechnum oceanicum (Rosenst.) Brownlie, Fl. Nouv.Calédonie & Dépend. 3: 245. 1969. Lomaria spannagelii (Rosenst.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum spannagelii Rosenst., Hedwigia 46: 93–94. 1907. Lomaridium C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 514. 1851.—Type: Lomaridium plumieri (Desv.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 514–515. 1851. Figs. 4C, 6I. Plants terrestrial or climbing by rhizomes; rhizomes long-creeping, climbing trees or ascending to erect, non-stoloniferous, stout, clothed with mostly bicolorous, long-lanceolate, denticulate or entire (rare) scales; fronds dimorphic; stipes stout, long, stramineous, brown to dark brown, proximally with scales like those of rhizomes, glabrous or minutely but densely papillose; blades concolorous or bicolorous, the adaxial side dark green, abaxially silver-green, lanceolate or CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 211 ovate-deltate, deeply pinnatisect or pinnate in the proximal half, usually with many pairs of greatly reduced, auriculate or vestigial pinnae proximally, distally pinnatifid, sometimes with an entire, acuminate blade tip; rachises glabrous or with scattered minute hairs, often atropurpureus; buds absent; aerophores absent; pinnae adnate, oblong-acute to linear-attenuate or narrowly triangular, sometimes falcate, margins entire, slightly revolute; veins free, 1-furcate proximally, terminating near margins in enlarged vein tips adaxially; sori linear, indusia linear, entire to subentire; x = 29, 32. Species number, comments, and distribution:—16 species in southern tropical regions, especially the Neotropics, eastern Africa, and Madagascar; a single species, Lomaridium contiguum, is known from Australasia. Lomaridium is easily distinguished from other Blechnaceae by the denticulate rhizome scales, glabrous leaves, and plants that climb by rhizomes. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Lomaridium acutum (Desv.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria acuta Desv., Mém. Soc. Linn. Paris 6: 290. 1827.—Blechnum acutum (Desv.) Mett., Ann. Sci. Nat. Bot., sér. 5, 2: 225. 1864. Lomaridium attenuatum (Sw.) Gasper & V.A.O.Dittrich, comb. nov.—Onoclea attenuata Sw., J. Bot. (Schrader) 1800(2): 73. 1801.—Blechnum attenuatum (Sw.) Mett., Fil. Hort. Bot. Lips. 64, pl. 3, f. 1–6. 1856. Lomaridium biforme (Baker) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria biformis Baker, J. Linn. Soc., Bot. 15: 415. 1876.—Blechnum biforme (Baker) Christ, Farnkr. Erde 180. 1897. Lomaridium binervatum (Poir.) Gasper & V.A.O.Dittrich, comb. nov.—Polypodium binervatum Poir., in Lam., Encycl. 5: 521. 1804.—Blechnum binervatum (Poir.) C.V.Morton & Lellinger, Amer. Fern J. 57: 67. 1967. Lomaridium bonapartei (Rakotondr.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum bonapartei Rakotondr., Adansonia, sér. 3, 35 167, f. 8, 9[map]. 2013. Lomaridium contiguum (Mett.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum contiguum Mett., Ann. Sci. Nat. Bot., sér. 4, 15: 70. 1861. Lomaridium dendrophilum (Sodiro) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria dendrophila Sodiro, Anales Univ. Centr. Ecuador 8: 148. 1893.—Blechnum dendrophilum (Sodiro) C.Chr., Index Filic. 153. 1905. Lomaridium ensiforme (Liebm.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria ensiformis Liebm., Kongel. Danske Vidensk. Selsk. Skr., Naturvidensk. Math. Afd., ser. 5, 1: 234. 1849.—Blechnum ensiforme (Liebm.) C.Chr., Index Filic. 153. 1905. Lomaridium fragile (Liebm.) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria fragilis Liebm., Kongel. Danske Vidensk. Selsk. Skr., Naturvidensk. Math. Afd., ser. 5, 1: 232. 1849.—Blechnum fragile (Liebm.) C.V.Morton & Lellinger, Amer. Fern J. 57: 68. 1967. Lomaridium fuscosquamosum (A.Rojas) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum fuscosquamosum A.Rojas, Lankesteriana 5: 49, f. 1a, b. 2005. Lomaridium nigrocostatum (A.Rojas) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum nigrocostatum A.Rojas, Mét. Ecol. Sist. 3: 38. 2008. Lomaridium plumieri (Desv.) C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 515. 1851.—Lomaria plumieri Desv., Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 325. 1811.—Blechnum plumieri (Desv.) Mett., Fil. Hort. Bot. Lips. 61, t. 4, f. 19-20. 1856. Lomaridium pteropus (Kunze) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria pteropus Kunze, Farrnkräuter 1(4): 97, t. 46. 1842. Blechnum pteropus (Kunze) Mett., Fil. Hort. Bot. Lips. 61. 1856. Lomaridium schottii (Colla) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria schottii Colla, Herb. Pedem. 6: 220. 1836.—Blechnum schottii (Colla) C.Chr., Ark. Bot. 10(2): 7. 1910. Lomaridium simillimum (Baker) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria simillimum Baker, J. Bot. 22: 141. 1884.—Blechnum simillimum (Baker) Diels, Nat. Pflanzenfam. 1(4): 248. 1899. Lomaridium xiphophyllum (Baker) Gasper & V.A.O.Dittrich, comb. nov.—Lomaria xiphophylla Baker, J. Bot. 22: 142. 1884.—Blechnum xiphophyllum (Baker) C.Chr., Index Filic. 161. 1905. Lomariocycas (J.Sm.) Gasper & A.R. Sm., comb. nov.—Lomaria sect. Lomariocycas J.Sm., Hist. Fil. 305. 1875.— Blechnum sect. Lomariocycas (J.Sm.) C.V.Morton, Amer. Fern J. 49: 68. 1959.—Type: Lomaria boryana (Sw.) Willd., based on Onoclea boryana Sw. = [Blechnum boryanaum (Sw.) Schltdl.] = Lomariocycas tabularis (Thunb.) Gasper & A.R.Sm. Figs. 4D, 7A. Plants terrestrial, rarely epiphytic; rhizomes erect, stout, trunk-like, non-stoloniferous, densely clothed at apices with bicolorous, acicular, curved, multilayered, entire scales; fronds dimorphic, rarely monomorphic; stipes stout, long, yellowish to dark brown, with scales similar to those of rhizomes at base, distally glabrous or scaly; blades concolorous, 212 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. oblanceolate to elliptic, pinnate, pinnatisect distally, pinnae gradually reduced proximally to small auricles, apices abruptly reduced to a large, entire segment; rachises with scales on both surfaces or only abaxially, these sometimes deciduous; buds absent; aerophores absent; pinnae sessile to subpetiolulate or partially adnate, linear to oblong, narrowly oblong-lanceolate, margins entire, strongly revolute; veins free, ending before the margins, immersed in blade tissue and practically invisible without clearing; sori linear, indusia linear, continuous, entire or erose; x = 33. Species number, comments, and distribution:—About 19 species in the Neotropics, Africa, and Madagascar; the genus is absent in Australasia. Lomariocycas is reminiscent of species of Cycas (hence the name), a gymnosperm, because of the erect trunk-like rhizomes, and the rosetted arrangement of the pinnate leaves. The veins are immersed in the blade tissue and practically invisible, and the pinnae are beset with scales. This is closely related to Diploblechnum plus a clade formed by Neoblechnum, Oceaniopteris, Doodia, and Parablechnum (Gasper et al. in press). 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. Lomariocycas aurata (Fée) Gasper & A.R.Sm., comb. nov.—Lomaria aurata Fée, Mém. Foug. 8: 71. 1857.—Blechnum auratum (Fée) R.M.Tryon & Stolze, Fieldiana, Bot., n.s., 32: 67. 1993. Lomariocycas buchtienii (Rosenst.) Gasper & A.R.Sm., comb. nov.—Blechnum buchtienii Rosenst., Repert. Spec. Nov. Regni Veg. 5: 231. 1908. Lomariocycas columbiensis (Hieron.) Gasper & A.R.Sm., comb. nov.—Blechnum columbiense Hieron., Hedwigia 47: 244. 1908. Lomariocycas cycadifolia (Colla) Gasper & A.R.Sm., comb. nov.—Lomaria cycadifolia Colla, Herb. Pedem. 6: 219. 1836.—Blechnum cycadifolium (Colla) J.W.Sturm, Abh. Naturhist. Ges. Nürnberg 2: 173. 1858. Lomariocycas decrescens (Rakotondr.) Gasper & A.R.Sm., comb. nov.—Blechnum decrescens Rakotondr., Adansonia 35: 169. 2013. Lomariocycas insularis (C.V.Morton & Lellinger) Gasper & A.R.Sm., comb. nov.—Blechnum insularum C.V.Morton & Lellinger, Amer. Fern J. 57: 70. 1967. Lomariocycas longepetiolata (Tardieu) Gasper & A.R.Sm., comb. nov.—Blechnum longepetiolatum Tardieu, Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. 6: 230. 1955. Lomariocycas longipinna (Rakotondr.) Gasper & A.R.Sm., comb. nov.—Blechnum longipinnum Rakotondr., Adansonia, sér. 3, 35 174–176, f. 15, 16[map]. 2013. Lomariocycas madagascariensis (Tardieu) Gasper & A.R.Sm., comb. nov.—Blechnum madagascariense Tardieu, Mém. Inst. Sci. Madagascar, Sér. B, Biol. Vég. 6: 230, f. 3, 1–4. 1955. Lomariocycas magellanica (Desv.) Gasper & A.R.Sm., comb. nov.—Blechnum magellanicum (Desv.) Mett., Fil. Lechl. 1: 14. 1856. Lomariocycas obtusifolia (Ettingsh.) Gasper & A.R.Sm., comb. nov.—Lomaria obtusifolia C.Presl, Tent. Pterid. 143. 1836.—Blechnum obtusifolium Ettingsh., Denkschr. Kaiserl. Akad. Wiss., Math.-Naturwiss. Kl. 23: 59, t. 8, f. 4. 1864. Lomariocycas palmiformis (Thouars) Gasper & A.R.Sm., comb. nov.—Pteris palmiformis Thouars, Fl. Tristan d’Acugna 30. 1804.—Blechnum palmiforme (Thouars) C.Chr., Results Norweg. Sci. Exped. Tristan da Cunha no. 6: 10. 1940. Lomariocycas rufa (Spreng.) Gasper & A.R.Sm., comb. nov.—Lomaria rufa Spreng., Nova Acta Phys.Med. Acad. Caes. Leop.-Carol. Natur. Cur. 10: 230. 1821.—Blechnum rufum (Spreng.) C.Chr., Index Filic., Suppl. 1, 17. 1913. Lomariocycas shaferi (Broadh.) Gasper & A.R.Sm., comb nov.—Struthiopteris shaferi Broadh.—Bull. Torrey Bot. Club 39: 374, t. 27. 1912.—Blechnum shaferi (Broadh.) C.Chr., Index Filic., Suppl. 1, 17. 1913. Lomariocycas schomburgkii (Klotzsch) Gasper & A.R.Sm., comb. nov.—Lomaria schomburgkii Klotzsch, Linnaea 20: 346. 1847.—Blechnum schomburgkii (Klotzsch) C.Chr., Index Filic. 159. 1905. Lomariocycas tabularis (Thunb.) Gasper & A.R.Sm., comb. nov.—Pteris tabularis Thunb., Prodr. Pl. Cap., 171. 1800.—Blechnum tabulare (Thunb.) Kuhn, Filic. Afr. 94. 1868. Lomariocycas underwoodiana (Broadh.) Gasper & A.R.Sm., comb. nov.—Struthiopteris underwoodiana Broadh., Bull. Torrey Bot. Club 39: 377, t. 28. 1912.—Blechnum underwoodianum (Broadh.) C.Chr., Index Filic., Suppl. 1, 17. 1913. Lomariocycas werckleana (Christ) Gasper & A.R.Sm., comb. nov., Lomaria werckleana Christ, Bull. Herb. Boissier, sér. 2, 4(11): 1091. 1904.—Blechnum werckleanum (Christ) C.Chr., Index Filic. 161. 1905. Lomariocycas yungensis (J.P.Ramos) Gasper & A.R.Sm., comb. nov.—Blechnum yungense J.P.Ramos, Novon 20: 68. 2010. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 213 Neoblechnum Gasper & V.A.O.Dittrich, gen. nov.—Type: Neoblechnum brasiliense (Desv.) Gasper & V.A.O.Dittrich. Figs. 4E, 7B. Diagnosis: Rhizomes stout, erect, forming caudices, apices covered by long (2 cm) black, glossy, acicular, curved, entire scales; fronds monomorphic; pinnae adnate, strongly decurrent at bases, margins serrulate; proximal pinnae (many pairs) gradually reduced to small triangular, obtuse lobes ca. 1 cm long, broader than long. Plants terrestrial; rhizomes erect, stout, trunk-like, non-stoloniferous, clothed with black, glossy, acicular, curved, entire scales; fronds monomorphic; stipes stout, short, brown to blackish, proximally with smaller scales similar to those of the rhizomes, glabrous or glabrescent distally; blades concolorous, oblong-lanceolate, pinnate to pinnatisect, gradually reduced at base, with small auricles at the blade bases, apices pinnatifid; rachises glabrous or with tiny capitate hairs; buds absent; aerophores absent; pinnae adnate to rachises, decurrent, linear to linear-lanceolate, margins serrulate; veins free, 1-furcate, each ending at pinna margins; sori linear, indusia entire to subentire; x = 66. Species number, comments, and distribution:—One neotropical species. The plants are monomorphic, with trunk-like rhizomes when old; pinna margins are serrulate. The name was coined from the exclusively neotropical occurrence of the sole species Neoblechnum brasiliense. It is closely related to Oceaniopteris and Doodia (Gasper et al. in press). 1. Neoblechnum brasiliense (Desv.) Gasper & V.A.O.Dittrich, comb. nov.—Blechnum brasiliense Desv., Mag. Neuesten Entdeck. Gesammten Naturk. Ges. Naturf. Freunde Berlin 5: 330. 1811. Oceaniopteris Gasper & Salino, gen. nov.—Type: Oceaniopteris gibba (Labill.) Gasper & Salino. Figs. 4F, 6C. Diagnosis: Rhizomes short-creeping to erect with black, acuminate, acicular scales, except when aquatic (O. francii); fronds dimorphic to subdimorphic; proximal pinnae only slightly shorter than others, or greatly reduced (e.g., O. gibba), veins free, furcate. Plants terrestrial; rhizomes short-creeping to erect, non-stoloniferous, stout, sometimes trunk-like, clothed with black, acuminate, acicular, entire scales (except when aquatic, as O. francii), or scales sometimes pectinate and broadened only at the very base, otherwise acicular for nearly their entire length (as in O. gibba); fronds dimorphic to subdimorphic, or hemidimorphic (only distal pinnae fertile); stipes usually stout (but very narrow, 0.5 mm diam. in O. francii), long or short, stramineous, brown, or blackish, with scales similar to those of rhizomes, fewer scales distally, scales sometimes deciduous, rarely with small hairs; blades concolorous, deltate to ovate (narrowly lanceolate in O. francii), pinnate or pinnate-pinnatisect, slightly reduced proximally (greatly reduced in O. francii), with pinnatifid apices; rachises glabrous or with sparse scales and hairs; buds absent; aerophores absent; pinnae adnate or petiolulate, linear to narrowly elliptic, entire to serrate-dentate; veins free, furcate, each ending in a clavate hydathode adaxially; sori linear, on both sides of costae, indusia entire (over-arching and covering sporangia at maturity in O. francii); x = 32. Species number, comments, etymology, and distribution:—About eight species, distributed in Malesia, Fiji, New Caledonia, and Australia. This genus has trunk-like rhizomes, sometimes more than 1 m tall, with the exception of O. francii, an aquatic plant. The rhizomes have black, acuminate, acicular scales, and the fronds are dimorphic to subdimorphic. Oceaniopteris is similar to Neoblechnum brasiliense, which occurs only in the Neotropics, and has glossy, acicular, curved, entire scales and monomorphic fronds. The name was coined for the exclusively Oceanian (in Oceania) distribution of all known species. It is closely related to Neoblechnum and Doodia (Gasper et al. in press). 1. 2. 3. 4. 5. 6. Oceaniopteris cartilaginea (Sw.) Gasper & Salino, comb. nov.—Blechnum cartilagineum Sw., Syn. Fil. 114. 1867. Oceaniopteris ciliata (T.Moore) Gasper & Salino, comb. nov.—Lomaria ciliata T.Moore, Gard. Chron. 1866: 290, non Blechnum ciliatum C.Presl, 1925).—Blechnum moorei C.Chr., Index Filic. 157. 1905. Oceaniopteris egregia (Copel.) Gasper & Salino comb. nov.—Blechnum egregium Copel., Fragm. Fl. Philipp. 187. 1905. Oceaniopteris francii (Rosenst.) Gasper & Salino, comb. nov.—Blechnum francii Rosenst., Repert. Spec. Nov. Regni Veg. 12: 191. 1913. Oceaniopteris gibba (Labill.) Gasper & Salino, comb. nov.—Lomaria gibba Labill., Sert. Austro-Caledon. 3, t. 4. 5. 1824.—Blechnum gibbum (Labill.) Mett., Ann. Sci. Nat. Bot., sér. 4, 15: 68. 1861. Oceaniopteris obtusata (Labill.) Gasper & Salino, comb. nov.—Lomaria obtusata Labill., Sert. Austro-Cale- 214 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. 7. 8. don. 4, t. 6. 1824.—Blechnum obtusatum (Labill.) Mett., Ann. Sci. Nat. Bot., sér. 4, 15: 68. 1861. Oceaniopteris vittata (Brack.) Gasper & Salino, comb. nov.—Blechnum vittatum Brack., U.S. Expl. Exped., Filic. 16: 131, t. 16. 1854.—Blechnum cartilagineum Sw. var. vittatum (Brack.) Luerss., Fil. Graeff. 132. 1871. Oceaniopteris whelanii (F.M.Bailey) Gasper & Salino, comb. nov.—Blechnum whelanii F.M.Bailey, Rep. Bellenden-Ker Range 77. 1889. Parablechnum C.Presl, Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 469. 1851.—Type: Parablechnum procerum (G.Forst.) C.Presl, Epimel. Bot. 109. 1851. Figs. 4G, 7D. Orthogramma C.Presl, Epimel. Bot. 121. 1851—Type: Orthogramma gilliesii (Hook. & Grev.) C.Presl, based on Lomaria gilliesii Hook. & Grev. [= Blechnum chilense (Kaulf.) Mett.] Lomaria subg. Paralomaria Fée, Mém. Fam. Foug. 5: 69 (Gen. Fil.). 1852.—Type: Lomaria procera (G.Forst.) Spreng., based on Osmunda procera G.Forst. [= Blechnum procerum (G.Forst.) Sw.] Plants terrestrial; rhizomes erect or suberect, sometimes subarborescent to decumbent, short-creeping, non-stoloniferous, stout, clothed with reddish to brown, bicolorous or concolorous, ovate or ovate-lanceolate, entire or denticulate scales one cell thick, sometimes covered by mucilage; fronds usually dimorphic, rarely monomorphic or subdimorphic; stipes stout, long, stramineous, light brown, or dark purplish, proximally with scales similar to those of rhizomes, scaly, rarely with twisted hairs; blades concolorous, oblong to lanceolate, 1-pinnate, bases truncate, apices conform; rachises glabrous or glabrescent to often densely scaly; buds absent or present in a few species; aerophores sometimes borne at the bases of pinnae abaxially; pinnae sessile or stalked, usually not articulate (articulate in P. articulatum), often falcate, oblong-linear, lanceolate, plane or revolute at margins, entire or finely denticulate; veins free, simple to 1furcate, clavate at tips adaxially, near pinna margins; sori linear, indusia subentire to lacerate or erose; x = 28, 31, 33. Species number, comments, and distribution:—About 65 species, pantropical. The species of Parablechnum are characterized by the truncate laminae, 1-pinnate blades, and conform or subconform apices. The genus is most closely related to Lomariocyas and a clade formed by Neoblechnum, Oceaniopteris, and Doodia (Gasper et al. in press). 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Parablechnum acanthopodum (T.C.Chambers & P.A.Farrant) Gasper & Salino, comb. nov.—Blechnum acanthopodum T.C.Chambers & P.A.Farrant, Blumea 46: 290. 2001. Parablechnum ambiguum C.Presl, Epimel. Bot. 109. 1851.—Blechnum ambiguum (C.Presl) Kaulf. ex C.Chr., Dansk Bot. Ark., 9, 3: 21. 1937. Parablechnum articulatum (F.Muell.) Gasper & Salino, comb. nov.—Lomaria articulata F.Muell., Fragm. 5: 187. 1866.—Blechnum articulatum (F.Muell.) S.B.Andrews, Austrobaileya 1: 11. 1977. Parablechnum atropurpureum (A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum atropurpureum A.R.Sm., Acta Bot. Venez. 14(3): 5. 1984. Parablechnum bicolor (M.Kessler & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum bicolor M.Kessler & A.R.Sm., Amer. Fern J. 97: 66. 2007. Parablechnum bolivianum (M.Kessler & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum bolivianum M.Kessler & A.R.Sm., Amer. Fern J. 97: 69. 2007. Parablechnum camfieldii (Tindale) Gasper & Salino, comb. nov.—Blechnum camfieldii Tindale, Proc. Linn. Soc. New South Wales 85: 251. 1960. Parablechnum capense (Burm.f.) Gasper & Salino, comb. nov.—Blechnum capense Burm.f., Fl. Indica 28. 1768; see Roux (1982) for re-lectotypification.—Blechnum sylvaticum Schelpe, J. S. African Bot. 45: 221. 1979. Parablechnum chauliodontum (Copel.) Gasper & Salino, comb. nov.—Blechnum chauliodontum Copel., Univ. Calif. Publ. Bot. 14. 361. 1929. Parablechnum chilense (Kaulf.) Gasper & Salino, comb. nov.—Lomaria chilensis Kaulf., Enum. Filic. 154. 1824.—Blechnum chilense (Kaulf.) Mett., Fil. Lechl. 1: 14. 1856. Parablechnum chiriquanum (Broadh.) Gasper & Salino, comb. nov.—Struthiopteris chiriquana Broadh., Bull. Torrey Bot. Club 39: 361. 1912.—Blechnum chiriquanum (Broadh.) C.Chr., Index Filic., Suppl. 1, 16. 1913. Parablechnum christii (C.Chr.) Gasper & Salino, comb. nov.—Blechnum christii C.Chr., Index Filic. 152. 1905. Parablechnum cochabambense (M.Kessler & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum cochabambense M.Kessler & A.R.Sm., Amer. Fern J. 97: 72. 2007. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 215 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. Parablechnum confusum (E.Fourn.) Gasper & Salino, comb. nov.—Lomaria confusa E.Fourn., Ann. Sci. Nat. Bot., sér. 5, 18: 316. 1873.—Blechnum confusum (E.Fourn.) Brownlie, Fl. Nouv.-Calédonie & Dépend. 3: 249, t. 31, f. 5–6. 1969. Parablechnum corbassonii (Brownlie) Gasper & Salino, comb. nov.—Blechnum corbassonii Brownlie, Fl. Nouv.-Calédonie & Dépend. 3: 246, t. 31, f. 3, 4. 1969. Parablechnum cordatum (Desv.) Gasper & Salino, comb. nov.—Lomaria cordata Desv., Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 330. 1811.—Blechnum cordatum (Desv.) Hieron., Hedwigia 47: 239. 1908. Parablechnum decorum (Brause) Gasper & Salino, comb. nov.—Blechnum decorum Brause, Bot. Jahrb. Syst. 56: 156. 1920. Parablechnum dilatatum (T.C.Chambers & P.A.Farrant) Gasper & Salino, comb. nov.—Blechnum dilatatum T.C.Chambers & P.A.Farrant, Blumea 46: 292. 2001. Parablechnum falciforme (Liebm.) Gasper & Salino, comb. nov.—Lomaria falciformis Liebm., Kongel. Danske Vidensk. Selsk. Skr., Naturvidensk. Math. Afd., ser. 5, 1: 234. 1849.—Blechnum falciforme (Liebm.) C.Chr., Index Filic. 154. 1905. Parablechnum gemmascens (Alston) Gasper & Salino, comb. nov.—Blechnum gemmascens Alston, Bull. Jard. Bot. État 27: 57, f. 4. 1957. Parablechnum glaziovii (Christ) Gasper & Salino, comb. nov.—Blechnum glaziovii Christ, Annuaire Conserv. Jard. Bot. Genève 3: 42. 1899. Parablechnum gregsonii (Tindale) Gasper & Salino, comb. nov.—Blechnum gregsonii Tindale, Proc. Linn. Soc. New South Wales 85: 253. 1960. Parablechnum hieronymi (Brause) Gasper & Salino, comb. nov.—Blechnum hieronymi Brause, Bot. Jahrb. Syst. 56: 155. 1920. Parablechnum howeanum (T.C.Chambers & P.A.Farrant) Gasper & Salino, comb. nov.—Blechnum howeanum T.C.Chambers & P.A.Farrant, Telopea 5: 331. 1993. Parablechnum lechleri (Mett.) Gasper & Salino, comb. nov.—Blechnum lechleri Mett., Fil. Lechl. 2: 17. 1859. Parablechnum lima (Rosenst.) Gasper & Salino, comb. nov.—Blechnum lima Rosenst., Repert. Spec. Nov. Regni Veg. 11: 53. 1912. Parablechnum lineatum (Sw.) Gasper & Salino, comb. nov.—Osmunda lineata Sw., Prodr. 127. 1788.— Blechnum lineatum (Sw.) C.Chr., Index Filic. 156. 1905. Parablechnum loxense (Kunth) Gasper & Salino, comb. nov.—Lomaria loxensis Kunth, Nov. Gen. Sp. (quarto ed.) 1: 18–19. 1815[1816].—Blechnum loxense (Kunth) Hook. ex Salomon, Nomencl. Gefässkrypt. 117. 1883. Parablechnum loxense (Kunth) Gasper & Salino var. stenophyllum (Klotzsch) Gasper & Salino, comb. nov.—Lomaria stenophylla Klotzsch, Linnaea 20: 346. 1847.—Blechnum loxense var. stenophyllum (Klotzsch) Lellinger, Amer. Fern J. 93: 147. 2003. Parablechnum marginatum (Kuhn) Gasper & Salino, comb. nov.—Lomaria marginata Fée, Mém. Foug. 5: 71. 1852, non L. marginata Schrad., 1824.—Blechnum marginatum Kuhn, Filic. Afr. 92. 1868.—Blechnum montbrisonis C.Chr., Index Filic. 157. 1905. Parablechnum marginatum (Kuhn) Gasper & Salino var. humbertii (Tardieu) Gasper & Salino, comb. nov.—Blechnum humbertii Tardieu, Mém. Inst. Sci. Madagascar, sér. B, Biol. Vég. 6: 232, f. 5. 1955.—Blechnum montbrisonis var. humbertii (Tardieu) Rakotondr., Adansonia, sér. 3, 35: 178. 2013. Parablechnum milnei (Carruth.) Gasper & Salino, comb. nov.—Lomaria milnei Carruth., Fl. Vit. 351. 1873.—Blechnum milnei (Carruth.) C.Chr., Index Filic. 156. 1905. Parablechnum minus (R.Br.) Gasper & Salino, comb. nov.—Stegania minor R. Br., Prodr. 1: 153. 1810.— Blechnum minus (R.Br.) Ettingsh., Denkschr. Kaiserl. Akad. Wiss., Math.-Naturwiss. Kl. 23: 63, t. 8, f. 5, 12. 1864. Parablechnum monomorphum (R.C.Moran & B.Øllg.) Gasper & Salino, comb. nov.—Blechnum monomorphum R.C.Moran & B.Øllg., Nordic J. Bot. 15: 177. 1995. Parablechnum montanum (T.C.Chambers & P.A.Farrant) Gasper & Salino, comb. nov.—Blechnum montanum T.C.Chambers & P.A.Farrant, New Zealand J. Bot. 36: 11 1998. Parablechnum moranianum (A.Rojas) Gasper & Salino, comb. nov.—Blechnum moranianum A.Rojas, Brittonia 58: 388, 392, f. 1A, 2A. 2006. Parablechnum nesophilum (T.C.Chambers & P.A.Farrant) Gasper & Salino, comb. nov.—Blechnum nesophilum T.C.Chambers & P.A.Farrant, Blumea 46: 322. 2001. Parablechnum novae-zelandiae (T.C.Chambers & P.A.Farrant) Gasper & Salino, comb. nov.—Blechnum novae-zelandiae T.C.Chambers & P.A.Farrant, New Zealand J. Bot. 36: 8. 1998. 216 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. Parablechnum obtusum (R.C.Moran & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum obtusum R.C.Moran & A.R.Sm., Brittonia 57: 237. 2005. Parablechnum pacificum (Lorence & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum pacificum Lorence & A.R.Sm., PhytoKeys 4: 8, figs. 1–2, 14A. 2011. Parablechnum pazense (M.Kessler & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum pazense M. Kessler & A.R. Sm., Amer. Fern J. 97: 73. 2007. Parablechnum procerum (G.Forst.) C.Presl, Epimel. Bot. 109. 1851.—Osmunda procera G.Forst., Fl. Ins. Austr. 414. 1786.—Blechnum procerum (G.Forst.) Sw., J. Bot. (Schrader) 1800(2): 75. 1801. Parablechnum proliferum (Rosenst.) Gasper & Salino, comb. nov.—Blechnum proliferum Rosenst., Hedwigia 46: 91. 1906. Parablechnum puniceum (T.C.Chambers, P.J.Edwards & R.J.Johns) Gasper & Salino, comb. nov.—Blechnum puniceum T.C.Chambers, P.J.Edwards & R.J.Johns, Kew Bull. 60: 598, figs. 1–2. 2006. Parablechnum reflexum (Rosenst. ex M.Kessler & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum reflexum Rosenst. ex M.Kessler & A.R.Sm., Amer. Fern J. 97: 74. 2007. Parablechnum repens (M.Kessler & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum repens M.Kessler & A.R.Sm. Amer. Fern J. 97: 75. 2007. Parablechnum revolutum (Alderw.) Gasper & Salino, comb. nov.—Lomaria revoluta Alderw., Nova Guinea 14: 31. 1924.—Blechnum revolutum (Alderw.) C.Chr., Index Filic., Suppl. 3, 46. 1934. Parablechnum rheophyticum (R.C.Moran) Gasper & Salino, comb. nov.—Blechnum rheophyticum R.C.Moran, Nordic J. Bot. 15: 52. 1995. Parablechnum ryanii (Kaulf.) Gasper & Salino, comb. nov.—Lomaria ryanii Kaulf., Enum. Filic. 155. 1824.—Blechnum ryanii Hieron., Hedwigia 47: 245. 1908. Parablechnum schiedeanum (Schltdl. ex C.Presl) Gasper & Salino, comb. nov.—Blechnum schiedeanum (Schltdl. ex C.Presl) Hieron., Hedwigia 47: 239. 1908. Parablechnum sessilifolium (Klotzsch ex Christ) Gasper & Salino, comb. nov.—Lomaria sessilifolia Klotzsch ex Christ, Bull. Herb. Boissier, sér. 2, 4: 1092. 1904.—Blechnum sessilifolium (Klotzsch ex Christ) C.Chr., Index Filic. 159. 1905. Parablechnum smilodon (M.Kessler & Lehnert) Gasper & Salino, comb. nov.—Blechnum smilodon M.Kessler & Lehnert, Amer. Fern J. 97: 76. 2007. Parablechnum squamatum (M.Kessler & A.R.Sm.) Gasper & Salino, comb. nov.—Blechnum squamatum M.Kessler & A.R.Sm., Amer. Fern J. 97: 78. 2007. Parablechnum squamosissimum (A.Rojas) Gasper & Salino, comb. nov.—Blechnum squamosissimum A.Rojas, Mét. Ecol. Sist. 3(1): 37, f. 2, 3A, B. 2008. Parablechnum stipitellatum (Sodiro) Gasper & Salino, comb. nov.—Blechnum stipitellatum (Sodiro) C.Chr., Index Filic. 160. 1905. Parablechnum stuebelii (Hieron.) Gasper & Salino, comb. nov.—Blechnum stuebelii Hieron., Hedwigia 47: 241, pl. 4, fig. 14. 1908, as “stübelii”. Parablechnum subcordatum (E.Fourn.) Gasper & Salino, comb. nov.—Lomaria subcordata E.Fourn., Ann. Sci. Nat. Bot., sér. 5, 18: 316. 1873.—Blechnum subcordatum (E.Fourn.) Brownlie, Fl. Nouv.-Calédonie & Dépend. 3: 248, t. 32, f. 1–2. 1969. Parablechnum triangularifolium (T.C.Chambers & P.A.Farrant) Gasper & Salino, comb. nov.—Blechnum triangularifolium T.C.Chambers & P.A.Farrant, New Zealand J. Bot. 36: 14. 1998. Parablechnum tuerckheimii (Brause) Gasper & Salino, comb. nov.—Blechnum tuerckheimii Brause, Symb. Antill. 7(1): 159. 1911. Parablechnum usterianum (Christ) Gasper & Salino, comb. nov.—Lomaria usteriana Christ, Fl. Umgebung São Paulo 135. 1911.—Blechnum usterianum (Christ) C.Chr., Index Filic., Suppl. 2, 8. 1917. Parablechnum venosum (Copel.) Gasper & Salino, comb. nov.—Blechnum venosum Copel., Occas. Pap. Bernice Pauahi Bishop Mus. 14: 62. 1938. Parablechnum vestitum (Blume) Gasper & Salino, comb. nov.—Lomaria vestita Blume, Enum. Pl. Javae 203. 1828.—Blechnum vestitum (Blume) Kuhn, Ann. Mus. Bot. Lugduno-Batavum 4: 284. 1869. Parablechnum wattsii (Tindale) Gasper & Salino, comb. nov.—Blechnum wattsii Tindale, Contr. New South Wales Natl. Herb. 3: 247. 1963. Parablechnum werffii (R.C.Moran) Gasper & Salino, comb. nov.—Blechnum werffii R.C.Moran, Novon 2: 132, f. 2. 1992. Parablechnum wurunuran (Parris) Gasper & Salino, comb. nov.—Blechnum wurunuran Parris, Proc. Roy. Soc. Queensland 86: 157. 1975. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 217 FIGURE 5. Habitat of Blechnaceae genera. A. Anchistea virginica; B. Lorinseria areolata; C. Woodwardia unigemmata; D. Salpichalena volubilis; E. Stenochlaena milnei; F. Telmatoblechnum serrulatum; G. Austroblechnum penna-marina; H. Blechnidium melanopus; I. Blechnopsis orientalis. Photos from: A. The PLANTS Database, USDA, NRCS. 2016; B. James Van Kley; C. Ralf Knapp; D. Luis Adriano Funez; E. Julie F. Barcelona; F. Luis Adriano Funez; G. Vinícius A.O. Dittrich; H. Ralf Knap; I. Ralf Knap. Reproduced with permission from the authors. 218 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. FIGURE 6. Habitat of Blechnaceae genera. A. Blechnum occidentale; B. Brainea insignis; C. Cleistoblechnum eburneum. D. Cranfillia vulcanica; E. Diploblechnum fraserii; F. Doodia caudata; G. Icarus filiformis; H. Lomaria spannagelii; I. Lomaridium acutum. Photos from: A. Luis Adriano Funez; B. Ralf Knapp; C. Ralf Knap; D. Julie F. Barcelona; E. Michael Sundue; F. Paulo Araújo; G. WELT herbarium; H. Vinícius A.O. Dittrich; I. Tiago João Cadorin. Reproduced with permission from the authors. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 219 FIGURE 7. Habitat of Blechnaceae genera. A. Lomariocycas schomburkii. B. Neoblechnum brasiliense; C. Oceaniopteris gibba; D. Parablechnum glaziovii; E. Sadleria cyatheoides; F. Struthiopteris spicant; F. Photos from: A–B. Luis Adriano Funez; C. Vojtěch Zavadil; D. Vinícius A.O. Dittrich; E. Kit Herring; F. Ralf Knapp. Reproduced with permission from the authors. Sadleria Kaulf., Enum. Filic. 161. 1824.—Type: Sadleria cyatheoides Kaulf., Enum. Filic. 161. 1824. Figs. 4H, 7E. Plants terrestrial, epipetric in Sadleria squarrosa; rhizomes erect, subarborescent, non-stoloniferous, stout, bearing brown, linear-acuminate or lanceolate scales, these entire or minutely toothed or ciliolate at the margins; fronds monomorphic; stipes stout, long, stramineous or darkened, with filiform brown scales proximally, glabrous or glabrescent distally; blades concolorous, lanceolate to elliptic, pinnate-pinnatifid or bipinnate, apices pinnatifid; rachises scaly, sometimes with glandular hairs, glabrous or glabrescent; buds absent; aerophores absent; pinnae sessile or short-stipitate, with segments falcate to obtuse, subentire to crenate; veins furcate near the costa, uniting to form a pericostal arch, ending in hydathodes; sori linear, continuous over vein arches, indusia continuous or not, sometimes glandular; x = 33. Species number, comments, and distribution:—About six species, endemic to Hawaii. The trunk-like rhizomes, pinnate-pinnatifid or bipinnate blades, and brown, linear-acuminate or lanceolate rhizome scales are typically present in species of this genus. It is closely related to Cleistoblechnum and Blechnopsis (Gasper et al. in press). 1. 2. Sadleria cyatheoides Kaulf., Enum. Filic. 162. 1824. Sadleria pallida Hook. & Arn., Bot. Beech. Voy. 75, 171. 1832. 220 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. 3. 4. 5. 6. Sadleria souleyetiana (Gaudich.) T.Moore, Index Fil. 26. 1857.—Blechnum souleyetianum Gaudich., Voy. Bonite Bot. 134, t. 2, fig. 7–8. 1846. Sadleria squarrosa (Gaudich.) T.Moore, Index Fil. 26. 1857.—Blechnum squarrosum Gaudich., Voy. Bonite Bot. 42, t. 2, fig. 1–6. 1854. Sadleria unisora (Baker) W.J.Rob., Bull. Torrey Bot. Club 40: 227. 1913.—Polypodium unisorum Baker, in Hooker & Baker, Synops. Fil. 307. 1867. Sadleria wagneriana D.D.Palmer & Flynn, Pacific Sci. 51: 302. 1997. Struthiopteris Scop., Meth. Pl. 25. 1754.—Spicanta C.Presl 114. 1851, nom. superfl.—Type: Struthiopteris spicant (L.) F.W.Weiss., Pl. Crypt. Fl. Gott. 287. 1770. Figs. 4I, 7F. Homophyllum Merino, Ann. Soc. Hist. Nat. 1898: 108.—Type: Homophyllum blechniforme Merino [=Blechnum spicant (L.) Roth] = Struthiopteris spicant (L.) F.W. Weiss. Spicantopsis Nakai, Bot. Mag. (Tokyo) 47: 180. 1933.—Type: Spicantopsis niponica (Kunze) Nakai, based on Lomaria niponica Kunze [= Blechnum niponicum (Kunze) Makino] Plants terrestrial; rhizomes short-creeping or elongate, non-stoloniferous, stout, clothed with brown to dark brown, linear, lanceolate, or ovate-lanceolate, entire or sparingly toothed scales; fronds dimorphic or subdimorphic (S. amabilis); stipes slender, short, stramineous or dark purplish, scaly proximally, glabrous distally; blades concolorous, oblanceolate or lanceolate, pinnate to pinnatifid, very gradually reduced proximally to auricles, apices pinnatifid; rachises with a few filiform scales or glabrous; buds absent; aerophores absent; pinnae adnate, oblong-linear to linearfalcate, margins entire; veins free, inconspicuous, furcate, ending in submarginal hydathodes adaxially; sori linear, on both sides of costae, indusia linear, continuous or not, entire, usually enveloping sporangia at maturity; x = 31, 34. Species number, comments, and distribution:—Five temperate species, mostly from China and Japan, with Struthiopteris spicant having a circumboreal distribution. Characterized by the subdimorphic to dimorphic fronds, adnate pinnae, free veins, and veins ending in submarginal hydathodes. Struthiopteris resembles Austroblechnum, but they can be distinguished by the distribution, north-temperate for Struthiopteris and predominantly austral for Austroblechnum. Pinna margins—entire in Struthiopteris and crenate to serrate in Austroblechnum—also differ. Struthiopteris is closely related to Blechnidium and Brainea (Gasper et al. in press). 1. 2. 3. 4. 5. Struthiopteris amabilis (Makino) Ching, Sunyatsenia 5: 243. 1940.—Blechnum amabile Makino, Bot. Mag. (Tokyo) 11: 83. 1897. Struthiopteris castanea (Makino & Nemoto) Nakai, Bot. Mag. (Tokyo) 47. 186. 1933.—Lomaria castanea Makino, Bot. Mag. (Tokyo) 6(60): 45. 1892, nom. nud.—Blechnum castaneum Makino & Nemoto, Fl. Japan 1591. 1925. Struthiopteris hancockii (Hance) Tagawa, Acta Phytotax. Geobot. 14: 192. 1952.—Blechnum hancockii Hance, J. Bot. 21: 267. 1883. Struthiopteris niponica (Kunze) Nakai, Report Veg. Daisetsusan 15. 1930.—Lomaria niponica Kunze, Bot. Zeitung (Berlin) 6: 508. 1848.—Blechnum niponicum Makino, Bot. Mag. (Tokyo) 11: 82. 1897, as “nipponicum”. Struthiopteris spicant (L.) F.W.Weiss, Pl. Crypt. Fl. Gott. 287. 1770.—Osmunda spicant L., Sp. Pl. 2: 1066. 1753.—Blechnum spicant (L.) Sm., Mém. Acad. Roy. Sci. Turin 5: 411. 1793. Acknowledgments The authors thank CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) for financial support (process 475096/2012-6), A. Salino thanks CNPq for productivity grants, and André Luís de Gasper thanks Fundo de Apoio à Manutenção e ao Desenvolvimento da Educação Superior—FUMDES for a scholarship, and the Universidade Regional de Blumenau by the release of the first author. We dedicate this paper to Ray Cranfill, for his early insight into, and observations on, the systematics of this family. Some of the conclusions reached in our paper confirm early observations made 10–15 years ago by Cranfill. However, our results and conclusions were made largely independently, from newly sampled material, and we accept full responsibility for them. We are grateful to two anonymous reviewers for their useful comments on the manuscript. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 221 References Abraham, A., Ninan, C.A. & Mathew, P.M. (1962) Studies on the cytology and phylogeny of the pteridophytes. VII. Observations on one hundred species of south Indian ferns. Journal of Indian Botanical Society 41: 339–421. Aguiar, S., Quintanilla, L.G. & Amigo, J. (2007) Blechnum ×rodriguezii hyb. nov., a deer fern hybrid from southern Chile. American Fern Journal 97: 225–229. Akirov, I. (2013) Las Blechnaceae de la selva de neblina de Monte Zerpa, Mérida, Venezuela. Pittieria 37: 57–71. Allan, H.H. (1961) Flora of New Zealand. Vol. I. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledones. Government Printer, Wellington, 1085 pp. Alston, A.H.G. (1957) Some Colombian ferns collected by M. Køie. Bulletin du Jardin botanique de l’État a Bruxelles 27: 55–58. http://dx.doi.org/10.2307/3666979 Austrey, J.C., Bosser, J. & Ferguson, I.K. (2008) Flore des Mascareignes: La Réunion, Maurice, Rodrigues Ptéridophytes: 1. Psilotacées à 26. Marsiléacées. Institut de Recherche pour le Développement, Paris, 454 pp. Bidin, A.A. (1995) The ecology and cytology of Brainea insignis (Blechnaceae: Pteridophyta). Fern Gazette 15: 21–24. Boonkerd, T. & Pollawatn, R. (2004) A revised taxonomic account of the fern genus Woodwardia (Blechnaceae) in Thailand. Thai Forest Bulletin 32 (1): 1–5. Bower, F.O. (1923) The Ferns (Filicales): Volume 1, Analytical examination of the criteria of comparison: treated comparatively with a view to their natural classification. Cambridge University Press, Cambridge, 359 pp. Bower, F.O. (1926) The Ferns (Filicales): Volume 2, The Eusporangiatae and other relatively primitive ferns: treated comparatively with a view to their natural classification. Cambridge University Press, Cambridge, 344 pp. Brade, A.C. (1966) Blechnum (Blechnidium) heringerii. Sellowia 18: 87–90. Breitwieser, I., Brownsey, P.J., Heenan, P.B., Nelson, W.A. & Wilton, A.D. (2010) Flora of New Zealand Online. Available from: www. nzflora.info (accessed 5 March 2013) Broadhurst, J. (1912a) The genus Struthiopteris and its representatives in North America-I. Bulletin of the Torrey Botanical Club 39 (6): 275–296. http://dx.doi.org/10.2307/2478981 Broadhurst, J. (1912b) The genus Struthiopteris and its representatives in North America-II. Bulletin of the Torrey Botanical Club 39 (8): 357–385. http://dx.doi.org/10.2307/2479303 Brownlie, G. (1969) Blechnaceae. In: Aubréville, A. (Ed.) Flora de la Nouvelle-Calédonie et Dépandances. Muséum National D´Histoire Naturelle, Paris, pp. 234–253. Brownlie, G. (1977) The Pteridophyte flora of Fiji. J. Cramer, Vaduz [Liechtenstein], 393 pp. Brownsey, P.J. & Smith-Dodsworth, J.C. (2000) New Zealand ferns and allied plants. 2nd ed. David Bateman, Ltd., Auckland, New Zealand. Burrows, J.E. (1990) Southern African ferns and fern allies. Frandsen Publishers, Sandton, 359 pp. Chambers, T.C. (2007) Doodia hindii (Blechnaceae) a new species from north eastern New South Wales, Australia. Telopea 12: 257– 261. http://dx.doi.org/10.7751/telopea20085914 Chambers, T.C. (2013) A review of the genus Stenochlaena (Blechnaceae, subfamily Stenochlaenoideae). Telopea 15: 13–36. http://dx.doi.org/10.7751/telopea2013004 Chambers, T.C. & Farrant, P.A. (1993) Two new species of Blechnum from Lord Howe Island: B. geniculatum and B. howeanum. Telopea 52: 329–333. http://dx.doi.org/10.7751/telopea19934975 Chambers, T.C. & Farrant, P.A. (1995) Blechnum patersonii subsp. queenslandicum, a new subspecies. Telopea 6: 177–180. http://dx.doi.org/10.7751/telopea19953015 Chambers, T.C. & Farrant, P.A. (1996a) Blechnum blechnoides (Bory) Keys. (Blechnaceae), formerly B. banksii (Hook.f.) Mett. ex Diels, a fern from salt-spray habitats of New Zealand and Chile. New Zealand Journal of Botany 34: 441–445. http://dx.doi.org/10.1080/0028825X.1996.10410125 Chambers, T.C. & Farrant, P.A. (1996b) Four subspecies of the fern Blechnum penna-marina (Blechnaceae: Pteridophyta). Fern Gazette 15: 91–100. Chambers, T.C. & Farrant, P.A. (1998) The Blechnum procerum (“capense”) (Blechnaceae) complex in New Zealand. New Zealand Journal of Botany 36: 1–19. http://dx.doi.org/10.1080/0028825X.1998.9512544 222 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. Chambers, T.C. & Farrant, P.A. (1999) Blechnaceae excl. Doodia. Available from: http://www.anbg.gov.au/abrs/online-resources/flora/ (accessed 5 May 2013) Chambers, T.C. & Farrant, P.A. (2001) Revision of Blechnum (Blechnaceae) in Malesia. Blumea 46: 283–350. Ching, R.C. (1978) The Chinese fern families and genera: systematic arrangement and historical origin. Acta Phytotaxonomica Sinica 16 (3): 1–19 et 16 (4): 16–37. Chiou, W.-L., Shieh, W.-C. & Devol, C.E. (1975) 23. Blechnaceae. In: Li, H.L., Liu, T.S., Huang, T.C., Koyama, T. & DeVol, C.E. (Eds.) Flora of Taiwan. Epoch Publishing, Taipei, pp. 266–280. Copeland, E.B. (1947) Genera Filicum - The genera of ferns. Annales Cryptogamici et Phytopathologici 5: 1–247. Cranfill, R.B. (1993) Blechnaceae C.Presl - Chain fern family. In: Flora of North America Editorial Committee (Eds.) Flora of North America North of Mexico, vol. 2, Pteridophytes and gymnosperms. Oxford University Press, New York, USA., pp. 223–227. Cranfill, R.B. (2001) Phylogenetic studies in the Polypodiales (Pteridophyta) with an emphasis on the family Blechnaceae. Ph.D. Thesis, University of California, Berkeley. Cranfill, R.B. & Kato, M. (2003) Phylogenetics, biogeography and classification of the woodwardioid ferns (Blechnaceae). In: Chandra, S. & Srivastava, M. (Eds.) Pteridology in the New Millennium. Kluwer Academic Publishers, Dordrecht, pp. 25–48. http://dx.doi.org/10.1007/978-94-017-2811-9_4 Crouch, N., Klopper, R., Burrows, J. & Burrows, S. (2011) Blechnaceae. In: Crouch, N., Klopper, R., Burrows, J. & Burrows, S. (Eds.) Ferns of Southern Africa: A Comprehensive Guide. Struik Nature, Cape Town, pp. 724–745. Crowden, R.K. & Jarman, S.J. (1974) 3-Deoxyanthocyanins from the fern Blechnum procerum. Phytochemistry 13 (9): 1947–1948. http://dx.doi.org/10.1016/0031-9422(74)85122-8 Davies, K.L. (1991) A brief comparative survey of aerophore structure within the Filicopsida. Botanical Journal of the Linnean Society 107: 115–137. http://dx.doi.org/10.1111/j.1095-8339.1991.tb00220.x de Lange, P.J., Murray, B.G. & Datson, P.M. (2004) Contributions to a chromosome atlas of the New Zealand flora—38. Counts for 50 families. New Zealand Journal of Botany 42: 873–904. http://dx.doi.org/10.1080/0028825X.2004.9512936 Dittrich, V.A.O. (2005) Estudos taxonômicos no gênero Blechnum L. (Pterophyta: Blechnaceae) para as regiões sudeste e sul do Brasil. Ph.D. Thesis, Universidade Estadual Paulista Júlio de Mesquita Filho. Dittrich, V.A.O., Heringer, G. & Salino, A. (2007) Blechnaceae. In: Cavalcanti, T.B. & Ramos, A.E. (Eds.) Flora do Distrito Federal. Embrapa Recursos Genéticos e Biotecnologia, Brasília, pp. 91–108. Dittrich, V.A.O. & Salino, A. (2014) Blechnaceae, Lista de Espécies da Flora do Brasil. Available from: http://floradobrasil.jbrj.gov. br/2012/FB090784 (accessed 15 February 15) Dittrich, V.A.O., Salino, A. & Almeida, T.E. (2012) Two new species of the fern genus Blechnum with partially anastomosing veins from Northern Brazil. Systematic Botany 37 (1): 38–42. http://dx.doi.org/10.1600/036364412X616602 Dittrich, V.A.O., Salino, A. & Monteiro, R. (2015) The Blechnum occidentale (Blechnaceae, Polypodiopsida) species group in southern and southeastern Brazil. Phytotaxa 231 (3): 201–229. http://dx.doi.org/10.11646/phytotaxa.231.3.1 Ebihara, A., Nakato, N., Matsumoto, S., Chao, Y.S. & Kuo, L.Y. (2014) Cytotaxonomic studies on thirteen ferns of Taiwan. Bulletin of the National Museum of Nature and Science. Series B (Botany) 40: 19–28. Gasper, A.L. de, Almeida, T.E., Dittrich, V.A.O., Smith, A.R. & Salino, A. (in press) Molecular phylogeny of the fern family Blechnaceae (Polypodiales) with a revised genus-level treatment. Cladistics. Ghatak, J. (1977) Biosystematic survey of pteridophytes from Shevaroy Hills, south India. Nucleus 20: 105–108. Giudice, G.E., Luna, M.L., Carrión, C. & Sota, E.R. (2008) Revision of the genus Salpichlaena J.Sm. (Blechnaceae, Pteridophyta). American Fern Journal 98: 49–60. Hasebe, M., Wolf, P.G., Pryer, K.M., Ueda, K., Ito, M., Sano, R., Gastony, G.J., Yokoyama, J., Manhart, J.R., Murakami, N., Crane, E.H., Haufler, C.H. & Hauk, W.D. (1995) Fern phylogeny based on rbcL nucleotide sequences. American Fern Journal 85: 134–181. http://dx.doi.org/10.2307/1547807 Hennipman, E. (1966) Pteridoblechnum, a new genus of blechnoid ferns from Australia. Blumea 13: 397–403. Hennipman, E. (1968) The mucilage secreting hairs on the young fronds of some leptosporangiate ferns. Blumea 16: 97–103. Hennipman, E. (1984) Steenisioblechnum, a new fern genus from Queensland. Blumea 30: 17–20. Holttum, R.E. (1949) The classification of ferns. Biological reviews of the Cambridge Philosophical Society 24: 267–296. http://dx.doi.org/10.1111/j.1469-185X.1949.tb00577.x Holttum, R.E. (1954) Flora of Malaya. Vol. II. Ferns of Malaya. Government Printing Office, Singapore, 643 pp. Holttum, R.E. (1971) The genus Stenochlaena J. Smith with description of a new species. American Fern Journal 61: 119–123. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 223 http://dx.doi.org/10.2307/1546641 Hooker, J.D. & Ross, J.C. (1860) Flora Tasmaniae. Reeve Brothers, London, 950 pp. Hoshizaki, B.J. & Moran, R.C. (2001) Fern Grower’s Manual. Timber Press, Portland, Oregon, 605 pp. Jara-Seguel, P., Romero-Mieres, M. & Palma-Rojas, C. (2006) Chromosome numbers of Chilean pteridophytes: first contribution. Gayana Botánica 63: 115–118. http://dx.doi.org/10.4067/S0717-66432006000100007 Jarrett, F.M., Manton, I. & Roy, S.K. (1968) Cytological and taxonomic notes on a small collection of living ferns from Galapagos. Kew Bulletin 22: 475–480. http://dx.doi.org/10.2307/4108355 Kessler, M., Smith, A.R. & Lehnert, M. (2007) Ten new species and two new combinations of Blechnum (Blechnaceae, Pteridophyta) from Bolivia. American Fern Journal 97: 66–80. Killip, E.P. (1917) Ferns of Jamaica. American Fern Journal 7: 36–50. http://dx.doi.org/10.2307/1544679 Kramer, K.U. (1962) Flora of the Netherlands Antilles, vol. I. Pteridophyta. Natuurwetenschappelijke Studiekring voor Suriname en de Nederlandse Antillen 25: 1–84. Kramer, K.U. (1978) The pteridophytes of Suriname: an enumeration with keys of the ferns and fern-allies. Uitgaven Natuurwetenschappelijke Studiekring voor Suriname en de Nederlandse Antillen 93: 1–198. Kramer, K.U., Chambers, T.C. & Hennipman, E. (1990) Blechnaceae. In: Kramer, K.U. & Green, P.S. (Eds.) The Families and Genera of Vascular Plants. Vol 1. Pteridophytes and Gymnosperms. Springer-Verlag, Wien, Berlin, pp. 60–68. http://dx.doi.org/10.1007/978-3-662-02604-5_16 Kurita, S. (1986) Chromosome studies on South American pteridophytes (1). In: Anonymous (Ed.) Contributions to the Botany of the Andes II. Academia, Tokyo, pp. 47–67. Legrand, D. & Lombardo, A. (1958) Flora del Uruguay. I. Pteridophyta. Museo Nacional de Historia Natural, Montevideo, 67 pp. Lellinger, D.B. & Sota, E.R. (1972) Collecting ferns in the Choco, Colombia. American Fern Journal 62: 1–8. http://dx.doi.org/10.2307/1546501 Li, C., Lu, S., Ma, J., Gai, Y. & Yang, Q. (2014) Phylogeographic history of the woodwardioid ferns, including species from the Himalayas. Palaeoworld. [Published online] http://dx.doi.org/10.1016/j.palwor.2014.10.004 Lloyd, R.M. & Klekowski, E.J. (1970) Spore germination and viability in Pteridophyta: evolutionary significance of chlorophyllous spores. Biotropica 2: 129–137. http://dx.doi.org/10.2307/2989770 Lovis, J.D. (1978) Evolutionary patterns and processes in ferns. Advances in Botanical Research 4: 229–415. Manton, I. (1959) Cytological information on the ferns of West Tropical Africa. In: Alston, A.H.G. (Ed.) The Ferns and Fern-Allies of West Tropical Africa. Crown Agents for Oversea Governments and Administrations, Millbank, London, pp. 75–81. Manton, I. & Vida, G. (1968) Cytology of the fern flora of Tristan da Cunha. Proceedings of the Royal Society B (Biological Sciences) 170: 361–379. http://dx.doi.org/10.1098/rspb.1968.0045 Marcon, A.B., Barros, I.C.L. & Guerra, M. (2003) Cariologia de algumas espécies de pteridófitas ocorrentes no nordeste do Brasil. Acta Botanica Brasilica 17: 19–26. http://dx.doi.org/10.1590/S0102-33062003000100002 Marticorena, C. & Rodríguez, R. (1995) Flora of Chile. Volume 1: Pteridophyta-Gymnospermae. Universidad de Concepción, Concepción, 351 pp. Mickel, J.T. & Beitel, J.M. (1988) Pteridophyte flora of Oaxaca, Mexico. Memoirs of the New York Botanical Garden 46: 1–568. Mickel, J.T. & Smith, A.R. (2004) The pteridophytes of Mexico. Memoirs of the New York Botanical Garden 88: 1–1054. Moran, R.C. (1990) Three new species of ferns from Mesoamerica. Annals of the Missouri Botanical Garden 77: 591–593. http://dx.doi.org/10.2307/2399525 Moran, R.C. (1992) Five new species of ferns from the American tropics. Novon 2: 132–138. http://dx.doi.org/10.2307/3391674 Moran, R.C. (1995a) Flora Mesoamericana, Volumen 1: Psilotaceae a Salviniaceae. Universidad Nacional Autónoma de México, Ciudad Universitaria-Mexico, 470 pp. Moran, R.C. (1995b) Five new species and two new combinations of ferns (Polypodiopsida) from Ecuador. Nordic Journal of Botany 15: 49–58. http://dx.doi.org/10.1111/j.1756-1051.1995.tb00120.x Moran, R.C. & Smith, A.R. (2005) Blechnum obtusum (Blechnaceae), a new species from western Venezuela. Brittonia 57: 237–239. 224 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. Mori, S.A., Cremer, G., Gracie, C., Granville, J.J., Hoff, M. & Mirchell, J.D. (1997) Guide to the Vascular Plants of Central French Guiana. Part 1. Pteridophytes, Gymnosperms, and Monocotyledons. Missouri Botanical Garden Press, 908 pp. Murillo, M.T. (1968) Blechnum subgenero Blechnum en Sur América, con especial referencia a las especies de Colombia. Nova Hedwigia 16: 329–366. Murray, B.G. & Lange, P.J. (2013) Contributions to a chromosome atlas of the New Zealand flora - 40. Miscellaneous counts for 36 families. New Zealand Journal of Botany 51: 31–60. http://dx.doi.org/10.1080/0028825X.2012.747969 Nakahira, Y. (2000) A molecular phylogenetic analysis of the family Blechnaceae, using the chloroplast gene rbcL. Unpublished MS Thesis, Graduate School of Science, University of Tokyo. Tokyo. Nakato, N. (1987) Chromosome numbers of three endemic species of the fern genus Blechnum in Japan. The Journal of Japanese Botany 62: 129–133. Nooteboom, H.P. (2012) Blechnaceae. Flora Malesiana, sér. II, 4: 1–84. Palmer, D.D. (1997) A revision of the genus Sadleria (Blechnaceae). Pacific Science 51: 288–305. Palmer, D.D. (2003) Hawaii’s Ferns and Fern Allies. University of Hawai’i Press, 325 pp. Parris, B.S. (1972) The genus Doodia R.Br. (Blechnaceae: Filicales) in New Zealand. New Zealand Journal of Botany 10: 585–604. http://dx.doi.org/10.1080/0028825X.1972.10430248 Parris, B.S. (2010) Blechnaceae. Doodia. Available from: http://www.anbg.gov.au/abrs/online-resources/flora/ (accessed 5 May 2013) Perrie, L.R., Wilson, R.K., Shepherd, L.D., Ohlsen, D.J., Batty, E.L., Brownsey, P.J. & Bayly, M.J. (2014) Molecular phylogenetics and generic taxonomy of Blechnaceae ferns. Taxon 63: 745–758. http://dx.doi.org/10.12705/634.13 Pichi-Sermolli, R.E.G. (1977) Tentamen Pteridophytorum genera in taxonomicum ordinem redigendi. Webbia 31: 313–512. http://dx.doi.org/10.1080/00837792.1977.10670077 Proctor, G.R. (1977) Flora of the Lesser Antilles: Leeward and Windward Islands. Vol. 2. Pteridophyta. Harvard University, Boston, 414 pp. Proctor, G.R. (1985) Ferns of Jamaica. British Museum (Natural History), London, 631 pp. Proctor, G.R. (1989) Ferns of Puerto Rico and the Virgin Islands. Memoirs of the New York Botanical Garden 53: 169–175. Quinn, C.J. (1961) Chromosome complements of the Tasmanian representatives of the genus Blechnum. Papers and Proceedings of the Royal Society of Tasmania 95: 1–5. Raj, V.I. & Manickam, V.S. (1987) SOCGI plant chromosome number reports—IV [i.e., V]. Journal of Cytology and Genetics 22: 156– 161. Ramos Giacosa, J.P. (2010) Blechnum yungense (Pteridophyta, Blechnaceae), una nueva especie de Argentina y Bolivia. Novon 20: 68–72. http://dx.doi.org/10.3417/2008120 Ranker, T.A., Smith, A.R., Parris, B.S., Geiger, J.M.O., Haufler, C.H., Straub, S.C.K. & Schneider, H. (2004) Phylogeny and evolution of grammitid ferns (Grammitidaceae): a case of rampant morphological homoplasy. Taxon 53: 415–428. http://dx.doi.org/10.2307/4135619 Ríos, R.R. (2015) Notas taxonómicas sobre Pteridófitos chilenos. Gayana Botánica 72: 94–100. http://dx.doi.org/10.4067/S0717-66432015000100012 Ríos, R.R., Abarca, D.A. & Cardemil, J.E. (2009) Guía de Campo Helechos Nativos del Centro y Sur de Chile. Corporación Chilena de la Madera, Concepcion, 212 pp. Rojas-Alvarado, A.F. (2006) Two new species of Blechnum (Blechnaceae) from the neotropics. Brittonia 58: 388–394. Rojas-Alvarado, A.F. (2008) Notes in the Blechnum l’herminieri complex (Blechnaceae) from the Neotropics. Métodos en Ecología y Sistemática 3: 8–29. Rolleri, C.H. & Prada, C. (2006a) Catálogo comentado de las especies de Blechnum L. (Blechnaceae, Pteridophyta) de Mesoamérica y Sudamérica. Anales del Jardín Botánico de Madrid 63: 67–106. http://dx.doi.org/10.3989/ajbm.2006.v63.i1.36 Rolleri, C.H. & Prada, C. (2006b) Revisión de los grupos de especies del género Blechnum (Blechnaceae-Pteridophyta): el grupo B. penna-marina. Acta Botánica Malacitana 31: 7–50. Rothfels, C.J., Sundue, M.A., Kuo, L.Y., Larsson, A., Kato, M., Schuettpelz, E. & Pryer, K.M. (2012) A revised family-level classification for eupolypod II ferns (Polypodiidae: Polypodiales). Taxon 61: 515–533. Roux, J.P. (2001) Conspectus of Southern African Pteridophyta: An Enumeration of the Pteridophyta of Angola, Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa (including the Marion Island Group), Swaziland, Zambia and Zimbabwe. Sabonet, Pretoria, 223 pp. Roux, J.P. (2003) Swaziland ferns and fern allies. Southern African Botanical Diversity Network. Sabonet, Pretoria, 241 pp. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 225 Roy, S.K. & Holttum, R.E. (1965) Cytological observations on ferns from southern China. American Fern Journal 55: 154–164. http://dx.doi.org/10.2307/1546027 Sankari Ammal, L. & Bhavanandan, K.V. (1989) Cytological studies in Blechnum melanopus Hook. from South India. Indian Fern Journal 6: 60–62. Schelpe, E.A.C.L.E. (1952) A revision of the African species of Blechnum. Journal of the Linnean Society of London, Botany 53: 487– 510. http://dx.doi.org/10.1111/j.1095-8339.1952.tb01559.x Schuettpelz, E. & Pryer, K.M. (2007) Fern phylogeny inferred from 400 leptosporangiate species and three plastid genes. Taxon 56: 1037–1050. http://dx.doi.org/10.2307/25065903 Sehnem, A. (1968) Blecnáceas. In: Reitz, R. (Ed.) Flora Ilustrada Catarinense, BLEC. Herbário Barbosa Rodrigues, Itajaí, 90 pp. Shepherd, L.D., Perrie, L.R., Parris, B.S. & Brownsey, P.J. (2007) A molecular phylogeny for the New Zealand Blechnaceae ferns from analyses of chloroplast trnL-trnF DNA sequence. New Zealand Journal of Botany 45: 67–80. http://dx.doi.org/10.1080/00288250709509703 Singh, V.P. & Roy, S.K. (1988) Cytology of forty-four species from Sikkim, Himalaya. Indian Fern Journal 5: 162–169. Smith, A.R. (1981) Blechnum. In: Breedlove, D.E. (Ed.) Flora of Chiapas. California Academy of Sciences, San Francisco, pp. 57–61. Smith, A.R. (1995) Blechnaceae. In: Steyermark, J., Berry, P., Holst, B. & Yatskievych, K. (Eds.) Flora of the Venezuelan Guayana Volume 2 - Pteridophytes, Spermatophytes - Acanthaceae-Araceae. Missouri Botanical Garden Press, St. Louis, pp. 23–29. Smith, A.R. & Foster, M.S. (1984) Chromosome numbers and ecological observations of ferns from El Tirol, Paraguay. Fern Gazette 12: 321–329. Smith, A.R. & Mickel, J.T. (1977) Chromosome counts for Mexican ferns. Brittonia 29: 391–398. http://dx.doi.org/10.2307/2806481 Smith, A.R., Pryer, K.M., Schuettpelz, E., Korall, P., Schneider, H. & Wolf, P.G. (2006) A classification for extant ferns. Taxon 55: 705–731. http://dx.doi.org/10.2307/25065646 Sodiro, L. (1883) Recensio cryptogamarum vascularium provinciae Quitensis. Typis Curiae Ecclesiaticae, Quito, 123 pp. Sodiro, L. (1893) Criptogamae vasculares Quitenses. Anales de la Universidade de Quito 56: 141–157. Sota, E.R. de la (1973) Sinopsis de las Pteridófitas del Noroeste de Argentina, II. Darwiniana 2: 173–263. Sota, E.R. de la (1975) Blechnum austrobrasilianum, un nuevo nombre de pteridofitas para la flora de America Meridional. Boletín de la Sociedad Argentina de Botánica 16: 248. Sota, E.R. de la, Pazos, E.C. de. (1983) Contribución al conocimiento biosistemático de las especies austrosudamericanas del género Blechnum L. (Blechnaceae—Pteridophyta). Lilloa 36: 77–83. Stolze, R.G. (1981) Ferns and fern allies of Guatemala. Part II. Polypodiaceae. Fieldiana, Botany, new series 6: 1–522. Sundue, M.A. & Rothfels, C.J. (2014) Stasis and convergence characterize morphological evolution in eupolypod II ferns. Annals of Botany 113: 35–54. http://dx.doi.org/10.1093/aob/mct247 Sykes, W.R. (2016) Flora of the Cook Islands. National Tropical Botanical Garden, Hawai’I, 950 pp. Takamiya, M., Osato, K. & Ono, K. (1992) Karyomorphological studies on Woodwardia sensu lato of Japan. Botanical Magazine (Tokyo) 105: 247–263. http://dx.doi.org/10.1007/BF02489419 Tindale, M.D. (1960) Contributions to the flora of New South Wales: new species and combinations in Acacia and Blechnum. Proceedings of The Linnean Society of New South Wales 85: 248–255. Tindale, M.D. & Roy, S.K. (2002) A cytotaxonomic survey of the Pteridophyta of Australia. Australian Systematic Botany 15: 839–937. http://dx.doi.org/10.1071/SB00034 Tryon, R.M. & Stolze, R.G. (1993) Pteridophyta of Peru. Part V. Fieldiana, Botany, new series 32: 1–204. Tryon, R.M. & Tryon, A.F. (1982) Ferns and Allied plants: With Special Reference to Tropical America. Springer-Verlag, New York, 857 pp. http://dx.doi.org/10.1007/978-1-4613-8162-4 Vareschi, V.H. (1969) Helechos. In: Lasser, T. (Ed.) Flora de Venezuela, vol. 1. Edición especial del Instituto Botánico, Caracas, pp. 146–154. Veillon, J.M. (1981) Réhabilitation de l’espèce Blechnum francii Rosenstock, fougère aquatique de la Nouvelle-Calédonie. Adansonia 2: 241–247. Wagner, F.S. (1995) The chromosomes of Sadleria (Blechnaceae). Contributions from the University of Michigan Herbarium 20: 239– 240. 226 • Phytotaxa 275 (3) © 2016 Magnolia Press GASPER ET AL. Walker, T.G. (1966) A cytotaxonomic survey of the pteridophytes of Jamaica. Transactions of the Royal Society of Edinburgh 66: 169– 237. http://dx.doi.org/10.1017/S0080456800023516 Walker, T.G. (1973) Additional cytotaxonomic notes on the pteridophytes of Jamaica. Transactions of the Royal Society of Edinburgh 69: 109–135. http://dx.doi.org/10.1017/S0080456800015027 Walker, T.G. (1985) Cytotaxonomic studies of the ferns of Trinidad. 2. The cytology and taxonomic implications. Bulletin of the British Museum (Natural History), Botany 13: 149–249. Wang, F.G., Xing, F.W., Dong, S.Y. & Kato, M. (2013) Blechnaceae. In: Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.) Flora of China, Vol. 2–3 (Pteridophytes). Beijing: Science Press, St. Louis, pp. 411–417. Zuloaga, F.O., Morrone, O. & Belgrano, M.J. (2008) Catálogo de Plantas Vasculares del Cono Sur - Volúmen 1 - Pteridophyta, Gymnospermae, Monocotyledoneae. Missouri Botanical Garden, St. Louis, 983 pp. CLASSIFICATION FOR BLECHNACEAE Phytotaxa 275 (3) © 2016 Magnolia Press • 227