Rare and Uncommon Vascular Plants of Delaware
Rare and Uncommon Vascular Plants of Delaware
Rare and Uncommon Vascular Plants of Delaware
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<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
William A. McAvoy<br />
<strong>Delaware</strong> Natural Heritage <strong>and</strong> Endangered Species Program<br />
<strong>Delaware</strong> Division <strong>of</strong> Fish <strong>and</strong> Wildlife<br />
April 2011<br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Acer saccharum var. saccharum sugar maple S3<br />
Acorus americanus American sweetflag SH<br />
Actaea pachypoda white baneberry S1<br />
Adiantum pedatum maidenhair-fern S3<br />
Adlumia fungosa climbing fumitory SX<br />
Aeschynomene virginica sensitive joint-vetch SX G2 LT<br />
Agalinis linifolia flaxleaf flase foxglove SH<br />
Agalinis maritima var. maritima salt marsh false foxglove S1<br />
Agalinis obtusifolia ten-lobe false foxglove SH<br />
Agalinis setacea thread-leaved false foxglove S1<br />
Agalinis tenuifolia var. tenuifolia slender false foxglove S1<br />
Agastache nepetoides yellow giant hyssop S2<br />
Agastache scrophulariifolia purple giant hyssop SH<br />
Ageratina aromatica lesser snakeroot SU<br />
Agrimonia gryposepala tall hairy agrimony S3<br />
Agrimonia pubescens downy agrimony S3<br />
Agrimonia rostellata woodl<strong>and</strong> agrimony S3<br />
Agrimonia striata edge agrimony S2<br />
Aletris farinosa white-tubed colicroot S3<br />
Allium tricoccum wild leek S3<br />
Alnus maritima subsp. maritima Delmarva alder S3 G3<br />
Amaranthus pumilus seabeach amaranth S1 G2 LT<br />
Amelanchier laevis smooth shadbush SU<br />
Amelanchier obovalis shadbush SH<br />
Amianthium muscitoxicum fly-poison S2<br />
Amphicarpum amphicarpon peanut grass S2<br />
Anagallis minima chaffweed SU<br />
Anaphalis margaritacea pearly everlasting SH<br />
Andropogon elliottii Elliott's bluestem SH<br />
Andropogon glomeratus var. hirsutior Southern bushy broom-sedge S1.1<br />
Anemone americana roundlobed hepatica S3<br />
Angelica atropurpurea great Angelica S1.1<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Angelica venenosa hairy Angelica S2<br />
Anthoxanthum hirtum vanilla grass S1<br />
Aplectrum hyemale puttyroot S1<br />
Apocynum <strong>and</strong>rosaemifolium spreading dogbane S1<br />
Apocynum sibiricum clasping-leaved dogbane SH<br />
Aquilegia canadensis wild columbine S2<br />
Arabidopsis lyrata lyre-leaf rockcress S1<br />
Aralia racemosa American spikenard S3<br />
Arctostaphylos uva-ursi bearberry SX<br />
Arethusa bulbosa dragon's mouth orchid SH<br />
Arisaema dracontium green dragon S2<br />
Aristida lanosa woolly three-awn grass SH<br />
Aristida virgata w<strong>and</strong>-like three-awn grass S1<br />
Arnica acaulis leopard's-bane SH<br />
Arnoglossum atriplicifolium pale Indian-plantain S2<br />
Aronia melanocarpa black chokeberry SH<br />
Aronia prunifolia purple chokeberry SU<br />
Asclepias amplexicaulis clasping milkweed S3<br />
Asclepias exaltata poke milkweed S2<br />
Asclepias incarnata subsp. incarnata marsh milkweed SU<br />
Asclepias lanceolata lance-leaf orange milkweed S1<br />
Asclepias longifolia long-leaf milkweed SX<br />
Asclepias purpurascens purple milkweed S2<br />
Asclepias quadrifolia four-leaved milkweed SH<br />
Asclepias rubra red milkweed S1<br />
Asclepias variegata white milkweed S2<br />
Asclepias verticillata whorled milkweed SH<br />
Asclepias viridiflora green milkweed S3<br />
Asplenium rhizophyllum walking-fern spleenwort SX<br />
Asplenium trichomanes subsp. trichomanes maidenhair spleenwort S1.1<br />
Atriplex mucronata crested saltbush S3<br />
Aureolaria flava var. flava yellow false-foxglove S1<br />
Aureolaria pedicularia var. pedicularia fernleaf yellow false foxglove S1<br />
Bartonia paniculata subsp. paniculata twining bartonia S2<br />
Betula populifolia gray birch S2<br />
Bidens bidentoides estuary tick-seed SH<br />
Bidens connata purple-stem tick-seed SU<br />
Bidens mitis small-fruited tick-seed S2<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Bidens trichosperma Northern tick-seed sunflower S3<br />
Blephilia ciliata downy woodmint SH<br />
Blephilia hirsuta hairy woodmint SH<br />
Boechera canadensis sicklepod S2<br />
Boechera laevigata smooth rockcress S1<br />
Boechera stricta Drummond's rockcress SH<br />
Bolboschoenus novae-angliae brackish bulrush S1<br />
Boltonia asteroides var. glastifolia aster-like boltonia S2<br />
Botrychium matricariifolium daisy-leaf moonwort S1<br />
Brachyelytrum erectum bearded short-husk grass S3<br />
Bromus latiglumis broad-glumed brome S1.1<br />
Bromus pubescens hairy wood brome S2<br />
Buchnera americana bluehearts SH<br />
Calamagrostis canadensis var. canadensis blue-joint reedgrass S1<br />
Callitriche terrestris pond water-starwort S3<br />
Callitriche verna vernal water-starwort SU<br />
Calopogon tuberosus var. tuberosus grass-pink orchid S1<br />
Caltha palustris marsh marigold S2<br />
Calystegia spithamaea subsp. spithamaea low bindweed S1<br />
Campanula aparinoides marsh bellflower S2<br />
Cardamine angustata slender toothwort S2<br />
Cardamine longii Long's bittercress S2 G3<br />
Cardamine parviflora var. arenicola small-flower bittercress S1<br />
Cardamine rotundifolia roundleaf bittercress S1.1<br />
Carex argyrantha hay sedge SX<br />
Carex barrattii Barratt's sedge S3<br />
Carex bicknellii Bicknel's sedge SX<br />
Carex brevior fescue sedge SX<br />
Carex bromoides subsp. bromoides brome-like sedge S2<br />
Carex bullata button sedge S3<br />
Carex bushii Bush's sedge S2<br />
Carex buxbaumii Buxbaum's sedge S1.1<br />
Carex canescens subsp. canescens approximate silvery sedge SU<br />
Carex collinsii Collins' sedge S3<br />
Carex communis var. communis fibrous-root sedge S2<br />
Carex conjuncta s<strong>of</strong>t fox sedge S3<br />
Carex conoidea field sedge S1.1<br />
Carex cristatella crested sedge S1.1<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Carex davisii Davis' sedge S1<br />
Carex decomposita cypress-knee sedge S1 G3<br />
Carex emoryi Emory's sedge S1<br />
Carex exilis coast sedge S1<br />
Carex gigantea giant sedge S3<br />
Carex gracilescens slender sedge S2<br />
Carex gracillima graceful sedge S3<br />
Carex granularis meadow sedge S3<br />
Carex grisea inflated narrowleaf sedge S1.1<br />
Carex gyn<strong>and</strong>ra nodding sedge S2<br />
Carex hirtifolia pubescent sedge S3<br />
Carex hormathodes marsh straw sedge S3<br />
Carex jamesii James's sedge S1.1<br />
Carex joorii cypress-swamp sedge S2<br />
Carex lacustris river-bank sedge S1<br />
Carex leptalea subsp. harperi Coastal Plain bristly-stalk sedge S3<br />
Carex leptalea subsp. leptalea Piedmont bristly-stalk sedge S1<br />
Carex limosa mud sedge SX<br />
Carex lucorum var. lucorum long-beaked sedge SH<br />
Carex lupuliformis false hop sedge S2<br />
Carex mesochorea midl<strong>and</strong> sedge SU<br />
Carex mitchelliana Mitchell's sedge S2<br />
Carex molesta troublesome sedge SU<br />
Carex muehlenbergii var. enervis Muhlenberg's nerveless sedge SU<br />
Carex oblita dark green sedge S2<br />
Carex oligocarpa Eastern few-fruit sedge S1.1<br />
Carex pedunculata var. pedunculata longstalk sedge SH<br />
Carex pellita woolly sedge S2<br />
Carex planispicata flat-spiked sedge S2<br />
Carex retr<strong>of</strong>lexa reflexed sedge S1<br />
Carex reznicekii Reznicek's sedge S3<br />
Carex scabrata rough sedge S1<br />
Carex silicea seabeach sedge S2<br />
Carex sparganioides bur-reed sedge S2<br />
Carex sprengelii longbeak sedge SH<br />
Carex squarrosa squarrose sedge S3<br />
Carex straminea straw sedge S1<br />
Carex striatula lined sedge S3<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Carex tetanica var. canbyi sedge S1.1<br />
Carex torta twisted sedge S2<br />
Carex trichocarpa hairy-fruit sedge S2<br />
Carex trisperma three-seed sedge SH<br />
Carex typhina cattail sedge S3<br />
Carex utriculata beaked sedge SH<br />
Carex vesicaria inflated sedge S1<br />
Carex vestita velvety sedge S2<br />
Carex willdenowii Willdenow's sedge S1<br />
Carya ovata shagbark hickory S3<br />
Castanea pumila Allegheny chinquapin S3<br />
Castilleja coccinea scarlet Indian-paintbrush SX<br />
Caulophyllum thalictroides blue cohosh S3<br />
Ceanothus americanus New Jersey tea S2<br />
Celastrus sc<strong>and</strong>ens climbing bittersweet SH<br />
Centella erecta erect coinleaf S2<br />
Centrosema virginianum coastal butterfly-pea SH<br />
Cerastium nutans nodding chickweed S1<br />
Cerastium velutinum var. velutinum field chickweed S1.1<br />
Ceratophyllum echinatum prickly coontail SU<br />
Cercis canadensis var. canadensis Eastern redbud SH<br />
Chaerophyllum procumbens var. procumbens spreading chervil S2<br />
Chamaecyparis thyoides Atlantic white cedar S3<br />
Chamaedaphne calyculata leatherleaf SH<br />
Chamaelirium luteum devil's-bit S1<br />
Chamerion platyphyllum fireweed SH<br />
Chasmanthium latifolium broad spikegrass SH<br />
Cheilanthes lanosa hairy lipfern SX<br />
Chimaphila umbellata var. cisatlantica pipsissewa S2<br />
Cicuta bulbifera bulb-bearing water-hemlock S1<br />
Cirsium altissimum tall thistle SH<br />
Cirsium muticum swamp thistle SH<br />
Cirsium pumilum pasture thistle S3<br />
Cirsium virginianum Virginia thistle SH G3<br />
Cleistesiopsis divaricata spreading pogonia SX<br />
Clematis occidentalis var. occidentalis purple clematis SX<br />
Clematis viorna vase-vine leatherflower S1.1<br />
Clitoria mariana var. mariana Maryl<strong>and</strong> butterfly-pea S2<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Coelorachis rugosa wrinkled jointgrass S1<br />
Commelina erecta s<strong>and</strong> dayflower S2<br />
Commelina virginica Virginia dayflower S1<br />
Comptonia peregrina sweet-fern S2<br />
Conopholis americana squaw-root S2<br />
Corallorhiza maculata var. maculata spotted coralroot SH<br />
Corallorhiza odontorhiza autumn coralroot S1<br />
Corallorhiza wisteriana spring coralroot SH<br />
Coreopsis rosea rose coreopsis S1 G3<br />
Cornus racemosa gray dogwood SH<br />
Cornus stolonifera red-osier dogwood SU<br />
Cornus stricta marsh dogwood S2<br />
Corydalis flavula yellow corydalis S1.1<br />
Corylus cornuta beaked hazelnut S1.1<br />
Crassula aquatica water-pigmyweed SX<br />
Crataegus coccinea scarlet hawthorn SU<br />
Crataegus crus-galli cockspur hawthorn SU<br />
Crataegus disperma spreading hawthorn SU<br />
Crataegus intricata Copenhagen hawthorn SU<br />
Crataegus iracunda stolon-bearing hawthorn SU<br />
Crataegus macrosperma big-fruit hawthorn SU<br />
Crataegus pennsylvanica Pennsylvania hawthorn SU G3Q<br />
Crataegus pruinosa waxy-fruit hawthorn SU<br />
Crataegus punctata dotted hawthorn SU<br />
Crataegus uniflora dwarf hawthorn SU<br />
Crataegus viridis green hawthorn SU<br />
Crocanthemum bicknellii Bicknell's hoary frostweed SX<br />
Crocanthemum canadense Canada frostweed S3<br />
Crocanthemum propinquum low frostweed S3<br />
Croton willdenowii Willdenow's croton SH<br />
Cunila origanoides dittany S2<br />
Cuphea viscosissima blue waxweed S2<br />
Cuscuta campestris yellow dodder SU<br />
Cuscuta compacta sessile dodder SU<br />
Cuscuta coryli hazel dodder SU<br />
Cuscuta pentagona field dodder SU<br />
Cuscuta polygonorum smartweed dodder SU<br />
Cynoglossum virginianum var. virginianum wild comfrey S3<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Cyperus dentatus toothed flatsedge SH<br />
Cyperus di<strong>and</strong>rus umbrella flatsedge S1<br />
Cyperus hystricinus flatsedge S1<br />
Cyperus lancastriensis Lancaster's flatsedge S1<br />
Cyperus odoratus var. engelmannii Engelman's rusty flatsedge S3<br />
Cyperus plukenetii Plukenet's flatsedge SH<br />
Cyperus refractus reflexed flatsedge S1<br />
Cyperus retr<strong>of</strong>ractus rough flatsedge SH<br />
Cyperus squarrosus awned flatsedge SU<br />
Cypripedium parviflorum var. pubescens large yellow lady's-slipper S1<br />
Cystopteris protrusa lowl<strong>and</strong> fragile fern S2<br />
Cystopteris tenuis bladderfern S1<br />
Danthonia compressa flattened oatgrass S2<br />
Danthonia sericea silky oatgrass S1<br />
Desmodium canadense showy tick-trefoil SH<br />
Desmodium canescens hoary tick-trefoil S1<br />
Desmodium cuspidatum var. cuspidatum toothed tick-trefoil SH<br />
Desmodium fernaldii Fernald's tick-trefoil S1.1<br />
Desmodium glabellum Dillen's tick-trefoil S3<br />
Desmodium humifusum trailing tick-trefoil SH G1G2Q<br />
Desmodium maril<strong>and</strong>icum Maryl<strong>and</strong> tick-trefoil S3<br />
Desmodium nuttallii Nuttall's tick-trefoil SU<br />
Desmodium obtusum stiff tick-trefoil S1<br />
Desmodium ochroleucum creamflower tick-trefoil SH G2G3<br />
Desmodium perplexum perplexed tick-trefoil SU<br />
Desmodium rotundifolium prostrate tick-trefoil S3<br />
Desmodium strictum pinel<strong>and</strong> tick-trefoil S2<br />
Dicentra cucullaria Dutchman's breeches S3<br />
Dichanthelium aciculare needle-leaf witch grass S1<br />
Dichanthelium angustifolium narrow-leaved witch grass SH<br />
Dichanthelium columbianum hemlock witch grass SU<br />
Dichanthelium dichotomum var. roanokense Roanoke witch grass S2<br />
Dichanthelium ensifolium witch grass S1<br />
Dichanthelium hirstii Hirst Brothers' panic grass S1.1 G1 C<br />
Dichanthelium linearifolium slim-leaf witch grass SH<br />
Dichanthelium longiligulatum long-ligule witch grass S1<br />
Dichanthelium oligosanthes var. oligosanthes few-flower witch grass S1<br />
Dichanthelium oligosanthes var. scribnerianum Scribner's witch grass S2<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Dichanthelium ravenelii Ravenel's witch grass S2<br />
Dichanthelium scabriusculum tall swamp witch grass S1<br />
Dichanthelium sphaerocarpon roundfruit witch grass S3<br />
Dichanthelium wrightianum Wright's witch grass S2<br />
Dichanthelium yadkinense Yadkin's witch grass S1<br />
Diervilla lonicera Northern bush-honeysuckle S1<br />
Digitaria filiformis var. filiformis slender crabgrass SU<br />
Diphasiastrum tristachyum ground-cedar clubmoss S2<br />
Diplazium pycnocarpon glade fern S1.1<br />
Dirca palustris Eastern leatherwood S1.1<br />
Doellingeria infirma cornel-leaf aster S1<br />
Doellingeria umbellata flat-top white aster S3<br />
Drosera capillaris pink sundew SH<br />
Drosera filiformis thread-leaf sundew SX<br />
Drosera rotundifolia var. rotundifolia roundleaf sundew S2<br />
Dryopteris celsa log wood-fern S2<br />
Dryopteris clintoniana Clinton's wood-fern S1<br />
Dryopteris goldiana Goldie's wood-fern S1<br />
Dryopteris marginalis marginal wood-fern S3<br />
Echinodorus tenellus American dwarf burhead SX<br />
Elatine americana American waterwort S2<br />
Elatine minima small waterwort S2<br />
Eleocharis aestuum estuary spikerush SH G3<br />
Eleocharis brittonii Britton's spikerush SH<br />
Eleocharis engelmannii Engelmann's spikerush SU<br />
Eleocharis equisetoides horsetail spikerush S1<br />
Eleocharis erythropoda bald spikerush S1<br />
Eleocharis fallax creeping spikerush S3<br />
Eleocharis flavescens var. flavescens pale spikerush SH<br />
Eleocharis halophila salt marsh spikerush S1.1<br />
Eleocharis melanocarpa black-fruit spikerush S2<br />
Eleocharis robbinsii Robbin's spikerush S3<br />
Eleocharis rostellata beaked spikerush S2<br />
Eleocharis tricostata tree-angle spikerush S1<br />
Elephantopus nudatus smooth elephant-foot S2<br />
Elodea canadensis broad-leaved waterweed SU<br />
Elymus glabriflorus var. australis pubescent Southeastern wild rye SU<br />
Elymus glabriflorus var. glabriflorus glabrous Southeastern wild rye SU<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Elymus hystrix bottlebrush wild rye S2<br />
Elymus macgregorii early wild rye SU<br />
Elymus riparius river wild rye S3<br />
Elymus villosus hairy wild rye S3<br />
Elymus virginicus var. halophilus salt-loving Virginia wild rye S3<br />
Endodeca serpentaria Virginia snakeroot S3<br />
Epigaea repens trailing arbutus S3<br />
Epilobium ciliatum hairy willowherb SU<br />
Equisetum fluviatile water horsetail S1<br />
Equisetum hyemale subsp. affine scouring-rush horsetail S1<br />
Equisetum sylvaticum woodl<strong>and</strong> horsetail S1<br />
Eragrostis hypnoides teal lovegrass S2<br />
Eragrostis refracta meadow lovegrass S2<br />
Eriocaulon aquaticum seven-angled pipewort S2<br />
Eriocaulon compressum flattened pipewort S2<br />
Eriocaulon decangulare ten-angle pipewort S1<br />
Eriocaulon parkeri Parker's pipewort S2 G3<br />
Eriophorum gracile slender cotton-grass sedge SX<br />
Eriophorum virginicum tawny cotton-grass sedge S1<br />
Eryngium aquaticum var. aquaticum rattlesnake-master S2<br />
Euonymus atropurpureus wahoo S1<br />
Eupatorium album var. subvenosum 3-nerved basal thoroughwort SU<br />
Eupatorium album var. vaseyi Vasey's white thoroughwort S3<br />
Eupatorium altissimum tall thoroughwort SU<br />
Eupatorium leucolepis white-bract thoroughwort S3<br />
Eupatorium resinosum pine barren boneset SX G3<br />
Eupatorium serotinum late-flowering thoroughwort S3<br />
Eupatorium sessilifolium var. sessilifolium sessile-leaf thoroughwort S1<br />
Eupatorium torreyanum Torrey's eupatorium SU<br />
Euphorbia purpurea glade spurge S1.1 G3<br />
Eurybia compacta slender aster SU<br />
Eurybia radula rough-leaf wood-aster SH<br />
Eurybia schreberi Schreber's aster S2<br />
Eurybia spectabilis showy aster S1<br />
Eutrochium purpureum var. purpureum purple-node Joe-pye-weed S3<br />
Fallopia sc<strong>and</strong>ens crested climbing buckwheat. SU<br />
Festuca paradoxa cluster fescue SH<br />
Fimbristylis annua annual fimbry SH<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Fimbristylis caroliniana Carolina fimbry S2<br />
Fimbristylis perpusilla Harper's fimbristylis S1 G2<br />
Floerkea proserpinacoides false mermaidweed S3<br />
Fraxinus nigra black ash S2<br />
Fuirena pumila dwarf umbrella-sedge S3<br />
Fuirena squarrosa hairy umbrella-sedge S3<br />
Galearis spectabilis showy orchis S3<br />
Galium asprellum rough bedstraw S2<br />
Galium boreale Northern bedstraw SH<br />
Galium hispidulum coast bedstraw SH<br />
Galium lanceolatum lance-leaf bedstraw S3<br />
Gaura biennis biennial gaura SH<br />
Gaylussacia bigeloviana Northern dwarf huckleberry SH<br />
Gaylussacia brachycera box huckleberry S1 G3<br />
Gentiana <strong>and</strong>rewsii var. <strong>and</strong>rewsii closed-bottle gentian S1.1<br />
Gentiana autumnalis pine barren gentian SX G3<br />
Gentiana catesbaei Elliott's gentian S3<br />
Gentiana saponaria soapwort gentian S3<br />
Gentiana villosa striped gentian SH<br />
Gentianopsis crinita fringed gentian SX<br />
Geum laciniatum var. laciniatum rough avens S3<br />
Geum virginianum pale avens S1<br />
Gillenia trifoliata Bowman's-root SH<br />
Glyceria acutiflora sharp-scaled mannagrass S2<br />
Glyceria canadensis Canada mannagrass S1<br />
Glyceria gr<strong>and</strong>is American mannagrass S1.1<br />
Glyceria laxa Northern mannagrass SH<br />
Gratiola aurea golden hedge-hyssop S3<br />
Gratiola brevifolia branching hedge-hyssop S1.1<br />
Gratiola viscidula Short's hedge-hyssop SH<br />
Gymnopogon ambiguus Eastern beardgrass S1<br />
Gymnopogon brevifolius pinel<strong>and</strong> beardgrass SH<br />
Helianthus angustifolius swamp sunflower S3<br />
Helianthus decapetalus thinleaf sunflower S3<br />
Helianthus divaricatus woodl<strong>and</strong> sunflower S1<br />
Helianthus strumosus pale-leaf sunflower SH<br />
Heliopsis helianthoides var. helianthoides ox-eye S1<br />
Helonias bullata swamp-pink S2 G3 LT<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Heracleum maximum cow-parsnip S3<br />
Heteranthera dubia grassleaf mud-plantain S2<br />
Heteranthera multiflora multiflowered mud-plantain SU<br />
Heuchera americana American alumroot S3<br />
Hibiscus moscheutos subsp. palustris pink swamp rosemallow SU<br />
Honckenya peploides subsp. robusta seabeach s<strong>and</strong>wort SH<br />
Hottonia inflata featherfoil S2<br />
Houstonia purpurea var. purpurea purple bluet S2<br />
Hudsonia ericoides golden-heather S1<br />
Humulus lupulus hops SU<br />
Hybanthus concolor green violet S1<br />
Hydrangea arborescens wild hydrangea SH<br />
Hydrastis canadensis golden seal S3<br />
Hydrocotyle americana American water-pennywort S3<br />
Hydrophyllum virginianum Eastern waterleaf S3<br />
Hylodesmum glutinosum large tick-trefoil S2<br />
Hypericum adpressum creeping St. John's-wort S2 G3<br />
Hypericum boreale Northern St. John's-wort S1<br />
Hypericum crux-<strong>and</strong>reae St. Peter's-wort S3<br />
Hypericum densiflorum bushy St. John's-wort S2<br />
Hypericum denticulatum coppery St. John's-wort S2<br />
Hypericum drummondii Drummond's St. John's-wort S1.1<br />
Hypericum ellipticum pale St. John's-wort SH<br />
Hypericum gymnanthum clasping-leaved St. John's-wort S2<br />
Hypericum hypericoides erect St. Andrew's cross S3<br />
Hypericum majus larger Canadian St. John's-wort SX<br />
Hypericum prolificum shrubby St. John's-wort S1.1<br />
Hypopitys monotropa American pinesap S2<br />
Hypoxis hirsuta Eastern yellow stargrass S3<br />
Impatiens pallida pale jewel-weed S3<br />
Ionactis linariifolia flaxleaf aster S2<br />
Iris prismatica slender blueflag iris S2<br />
Isoetes engelmannii Engelmann's quillwort S2<br />
Isoetes riparia riverbank quillwort S1<br />
Isoetes tenella spiny-spored quillwort S1.1<br />
Isoetes valida Carolina quillwort SH<br />
Isotria medeoloides small whorled pogonia S1.1 G2 LT<br />
Isotria verticillata large whorled pogonia S3<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Iva frutescens subsp. frutescens Southern marsh elder SU<br />
Juglans cinerea butternut S3<br />
Juncus coriaceus leathery rush S2<br />
Juncus elliottii bog rush SH<br />
Juncus militaris bayonet rush S2<br />
Juncus nodosus knotted rush SH<br />
Juncus pelocarpus brown-fruited rush S2<br />
Juncus pylaei ridged rush SU<br />
Juncus subcaudatus short-tailed rush S1<br />
Kalmia angustifolia sheep-laurel S2<br />
Krigia biflora var. biflora two-flowered dwarf d<strong>and</strong>elion SU<br />
Lachnanthes caroliniana Carolina redroot S1<br />
Lactuca floridana woodl<strong>and</strong> lettuce S2<br />
Lathyrus palustris vetchling peavine SH<br />
Lechea maritima var. virginica Southern beach pinweed SH<br />
Lechea mucronata hairy pinweed S2<br />
Lemna obscura little water duckweed SU<br />
Lespedeza angustifolia narrowleaf bushclover S3<br />
Lespedeza hirta var. hirta hairy bushclover S3<br />
Lespedeza stuevei tall bushclover S2<br />
Liatris pilosa grassleaf blazingstar S2<br />
Liatris scariosa var. scariosa round-head blazing-star SH<br />
Liatris spicata var. resinosa spicate blazingstar SH<br />
Liatris spicata var. spicata spicate blazingstar SH<br />
Liatris squarrosa var. squarrosa Northern blazingstar SH<br />
Lilium canadense subsp. canadense Canada lily S2<br />
Lilium philadelphicum var. philadelphicum wood lily SX<br />
Limnobium spongia American frog's-bit S2<br />
Limosella australis mudwort SX<br />
Linum intercursum s<strong>and</strong>plain flax S1<br />
Liparis liliifolia large twayblade S2<br />
Listera australis Southern twayblade S3<br />
Lobelia boykinii Boykin's lobelia SX G2G3<br />
Lobelia canbyi Canby's lobelia S2<br />
Lobelia elongata Southern blue lobelia S1.1<br />
Lobelia spicata var. campanulata pale-spike lobelia SH<br />
Lobelia spicata var. spicata pale-spike lobelia S2<br />
Lophiola aurea golden crest SX<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Ludwigia hirtella hairy seedbox S1<br />
Ludwigia linearis var. linearis narrow-leaf seedbox S3<br />
Lupinus perennis purple lupine S1<br />
Luzula acuminata var. acuminata Northern hairy woodrush S1<br />
Luzula acuminata var. carolinae Southern hairy woodrush S1<br />
Lycopodiella alopecuroides foxtail bog clubmoss S3<br />
Lycopodiella appressa appressed bog clubmoss S3<br />
Lycopodium clavatum staghorn clubmoss S3<br />
Lycopus amplectens sessile-leaved bugleweed S2<br />
Lygodium palmatum climbing fern S1.1<br />
Lyonia mariana staggerbush S2<br />
Lysimachia hybrida lowl<strong>and</strong> loosestrife S2<br />
Lysimachia lanceolata lance-leaf loosestrife SU<br />
Malaxis unifolia green adder's-mouth S1<br />
Malus angustifolia Southern crabapple SU<br />
Malus coronaria sweet crabapple SU<br />
Matelea carolinensis Carolina anglepod S2<br />
Mecardonia acuminata var. acuminata purple mecardonia S3<br />
Mentha canadensis Canada mint SU<br />
Menyanthes trifoliata bog buckbean SX<br />
Mertensia virginica Virginia bluebells S3<br />
Micranthemum micranthemoides Nuttall's micranthemum SX<br />
Micranthes pensylvanica swamp saxifrage S1.1<br />
Micranthes virginiensis Virginia saxifrage S3<br />
Minuartia caroliniana pine barren s<strong>and</strong>wort S1.1<br />
Minuartia michauxii var. michauxii rock s<strong>and</strong>wort SX<br />
Mitella diphylla two-leaf Bishop's-cap S2<br />
Monarda clinopodia basil beebalm S2<br />
Monarda fistulosa var. fistulosa wild bergamot beebalm S1.1<br />
Monotropsis odorata sweet pinesap SH G3<br />
Morella caroliniensis evergreen bayberry S2<br />
Morus rubra red mulberry S3<br />
Muhlenbergia capillaris long-awn muhly SH<br />
Muhlenbergia sobolifera cliff muhly S2<br />
Muhlenbergia sylvatica woodl<strong>and</strong> muhly SH<br />
Muhlenbergia tenuiflora slender muhly S2<br />
Muhlenbergia torreyana Torrey's muhly SX G3<br />
Myosotis laxa subsp. laxa small forget-me-not S3<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Myosotis macrosperma large-seed forget-me-not S1<br />
Myosotis verna spring forget-me-not SH<br />
Myriophyllum heterophyllum broadleaf water-milfoil SU<br />
Myriophyllum humile low water-milfoil S3<br />
Myriophyllum pinnatum cutleaf water-milfoil S2<br />
Myriophyllum sibiricum shortspike water-milfoil SU<br />
Myriophyllum verticillatum whorled water-milfoil SU<br />
Najas flexilis slender naiad SU<br />
Najas gracillima thread-like naiad S1<br />
Najas guadalupensis var. guadalupensis Southern naiad SU<br />
Narthecium americanum bog asphodel SX G2 C<br />
Nelumbo lutea American lotus S1.1<br />
Nymphoides aquatica big floatingheart SU<br />
Nymphoides cordata little floatingheart S1<br />
Obolaria virginica Virginia pennywort S3<br />
Oclemena nemoralis bog aster SX<br />
Oenothera fruticosa var. fruticosa narrow-leaf evening-primrose S2<br />
Oenothera humifusa sea-beach evening-primrose S3<br />
Oenothera oakesiana Oake's evening-primrose SU<br />
Oenothera parviflora small flowered evening-primrose SU<br />
Oenothera perennis perennial evening-primrose SU<br />
Oenothera tetragona var. tetragona shrubby evening-primrose S2<br />
Onosmodium virginianum Virginia false gromwell SH<br />
Ophioglossum pusillum Northern adder's-tongue SH<br />
Ophioglossum vulgatum Southern adder's-tongue S3<br />
Orobanche uniflora one-flowered broomrape S3<br />
Orthilia secunda one-side shinleaf SH<br />
Ostrya virginiana Eastern hop-hornbeam S2<br />
Oxypolis canbyi Canby's dropwort SX G2 LE<br />
Packera anonyma Small's ragwort S1.1<br />
Packera paupercula var. paupercula balsam ragwort S1<br />
Panax quinquefolius American ginseng S2<br />
Panicum dichotomiflorum var. puritanorum Puritan fall panicgrass SU<br />
Panicum hemitomon maidencane panicgrass S2<br />
Panicum longifolium var. combsii Combs long-leaf panicgrass SU<br />
Panicum philadelphicum Philadelphia panicgrass S1.1<br />
Panicum rigidulum var. condensum condensed redtop panicgrass SU<br />
Panicum rigidulum var. elongatum elongate redtop panicgrass SU<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Panicum virgatum var. cubense short switchgrass SU<br />
Panicum virgatum var. spissum tufted switchgrass SU<br />
Paronychia canadensis forked nailwort S3<br />
Paronychia fastigiata var. fastigiata cluster-stemmed nailwort S2<br />
Paronychia fastigiata var. paleacea cluster-stemmed nailwort S2<br />
Paspalum dissectum Walter's paspalum S3<br />
Paspalum setaceum var. setaceum slender paspalum S3<br />
Pedicularis canadensis early wood lousewort S2<br />
Pedicularis lanceolata swamp lousewort SH<br />
Penstemon hirsutus hairy beardtongue SH<br />
Penstemon laevigatus smooth beardtongue S1<br />
Persea palustris red bay SH<br />
Persicaria careyi Carey's smartweed SH<br />
Phacelia dubia var. dubia small-flower scorpionweed SH<br />
Phaseolus polystachios wild kidney bean SH<br />
Phegopteris connectilis Northern beech fern SH<br />
Phemeranthus teretifolius round-leaved fame-flower SX<br />
Phlox maculata subsp. maculata spotted phlox SU<br />
Phlox pilosa subsp. pilosa downy phlox SX<br />
Phragmites australis subsp. americanus North American reed S2<br />
Phyla lanceolata fog-fruit S2<br />
Phyllanthus caroliniensis Carolina leaf-flower SH<br />
Physalis virginiana Virginia ground-cherry SH<br />
Physocarpus opulifolius var. opulifolius Eastern ninebark SH<br />
Pinus echinata shortleaf pine S3<br />
Pinus rigida pitch pine S3<br />
Piptatherum racemosum black-fruit mountain-ricegrass SH<br />
Piptochaetium avenaceum blackseed needlegrass S3<br />
Pityopsis graminifolia var. latifolia grassleaf golden aster SH<br />
Platanthera blephariglottis white-fringe orchis S1<br />
Platanthera ciliaris yellow-fringe orchid SH<br />
Platanthera cristata yellow-crested orchis S2<br />
Platanthera flava var. herbiola Southern rein orchid S1<br />
Platanthera gr<strong>and</strong>iflora large purple-fringe orchis SX<br />
Platanthera lacera green-fringe orchis S3<br />
Platanthera nivea snowy orchis SH<br />
Platanthera peramoena purple fringeless orchid S1<br />
Platanthera psycodes small purple-fringe orchis SH<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Pleopeltis polypodioides subsp. michauxiana resurrection fern SX<br />
Pluchea camphorata marsh fleabane SH<br />
Pluchea foetida var. foetida stinking camphorweed S3<br />
Pluchea odorata var. odorata salt marsh fleabane SU<br />
Poa autumnalis autumn bluegrass S3<br />
Poa cuspidata early bluegrass S2<br />
Poa paludigena bog bluegrass S1.1<br />
Podostemum ceratophyllum threadfoot S1<br />
Pogonia ophioglossoides rose pogonia S2<br />
Polemonium reptans var. reptans Greek valerian S3<br />
Polygala ambigua whorled milkwort SH<br />
Polygala cruciata var. aquilonia crossleaf milkwort S2<br />
Polygala cymosa tall pine barren milkwort SX<br />
Polygala incarnata pink milkwort S1<br />
Polygala paucifolia gay-wing milkwort SX<br />
Polygala ramosa low pine barren milkwort SX<br />
Polygala senega var. latifolia Seneca milkwort SX<br />
Polygonatum biflorum var. commutatum giant Solomon's-seal S3<br />
Polygonum glaucum seabeach knotweed S1 G3<br />
Polygonum ramosissimum bushy knotweed S2<br />
Polygonum tenue slender knotweed SH<br />
Polypodium virginianum Virginia polypody S3<br />
Potamogeton natans floating pondweed S1<br />
Potamogeton perfoliatus clasping-leaf pondweed SU<br />
Potamogeton pusillus var. tenuissimus slender pondweed SU<br />
Potamogeton robbinsii flatleaf pondweed SX<br />
Prenanthes alba white rattlesnake-root SH<br />
Prenanthes autumnalis slender rattlesnake-root SH<br />
Prunus americana American plum SU<br />
Prunus maritima beach plum S3<br />
Puccinellia fasciculata salt marsh goosegrass SH<br />
Pycnanthemum clinopodioides basil mountain-mint SH G2<br />
Pycnanthemum incanum var. incanum hoary mountain-mint S1<br />
Pycnanthemum muticum blunt mountain-mint S3<br />
Pycnanthemum setosum awned mountain-mint S3 G3?<br />
Pycnanthemum torreyi Torrey's mountain-mint S1 G2<br />
Pycnanthemum verticillatum var. verticillatum whorled mountain-mint S3<br />
Pyrola americana round-leaf shinleaf S2<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Pyrola chlorantha green-flower shinleaf SH<br />
Pyrola elliptica elliptic shinleaf S2<br />
Quercus ilicifolia scrub oak SH<br />
Quercus lyrata overcup oak S2<br />
Quercus maril<strong>and</strong>ica var. maril<strong>and</strong>ica blackjack oak S3<br />
Quercus muehlenbergii yellow oak SU<br />
Quercus prinoides dwarf chinquapin oak S1<br />
Ranunculus ambigens water-plantain buttercup S1.1<br />
Ranunculus caricetorum hispid buttercup S1<br />
Ranunculus flabellaris yellow water-crowfoot S1.1<br />
Ranunculus hispidus bristly buttercup S1.1<br />
Ranunculus laxicaulis Mississippi buttercup SH<br />
Ranunculus longirostris Eastern white water-crowfoot SX<br />
Ranunculus pensylvanicus bristly buttercup SH<br />
Ranunculus pusillus Pursh's buttercup S3<br />
Ranunculus septentrionalis shining hispid buttercup S1.1<br />
Rhexia aristosa awned meadowbeauty S1 G3<br />
Rhododendron atlanticum coast azalea S3<br />
Rhododendron prinophyllum roseshell azalea SH<br />
Rhynchosia tomentosa hairy snoutbean S1<br />
Rhynchospora alba white beakrush S2<br />
Rhynchospora careyana Carey's beakrush SH<br />
Rhynchospora cephalantha var. cephalantha capitate beakrush S2<br />
Rhynchospora corniculata short-bristle beakrush S2<br />
Rhynchospora filifolia thread-leaved beakrush S1.1<br />
Rhynchospora fusca brown beakrush S2<br />
Rhynchospora glomerata clustered beakrush S2<br />
Rhynchospora harperi Harper's beakrush S1 G1<br />
Rhynchospora inundata drowned beakrush S1<br />
Rhynchospora knieskernii Knieskern's beakrush SX G1 LT<br />
Rhynchospora microcephala tiny-headed beakrush S2<br />
Rhynchospora nitens short-beaked beakrush S1<br />
Rhynchospora oligantha feather-bristle beakrush SH<br />
Rhynchospora pallida pale beakrush SH G3<br />
Rhynchospora rariflora few-flowered beakrush S1.1<br />
Rhynchospora recognita robust globe beakrush S2<br />
Rhynchospora scirpoides long-beaked beakrush S2<br />
Rhynchospora torreyana Torrey's beakrush S2<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Ribes americanum wild black gooseberry SH<br />
Ribes hirtellum Northern gooseberry SH<br />
Rosa carolina Carolina rose S3<br />
Rosa virginiana Virginia rose SU<br />
Rubus allegheniensis Allegheny blackberry SU<br />
Rubus argutus prickly Florida blackberry SU<br />
Rubus cuneifolius s<strong>and</strong> blackberry SU<br />
Rubus flagellaris Yankee blackberry SU<br />
Rubus frondosus bramble SU<br />
Rubus occidentalis black raspberry SU<br />
Rubus odoratus purple-flowering raspberry S1<br />
Rudbeckia fulgida var. fulgida orange coneflower SH<br />
Ruellia caroliniensis Carolina wild petunia S3<br />
Rumex altissimus tall dock S1<br />
Sabatia angularis square-stemmed rose pink S3<br />
Sabatia campanulata slender marsh pink S1<br />
Sabatia difformis two-formed pink S1<br />
Sabatia dodec<strong>and</strong>ra large marsh pink S1<br />
Sabatia stellaris sea pink S3<br />
Saccharum brevibarbe var. contortum bent-awn plumegrass S2<br />
Saccharum coarctatum bunched plumegrass S2<br />
Sacciolepis striata gibbous grass S1<br />
Sagittaria calycina spongy arrowhead S3<br />
Sagittaria engelmanniana Engelmann's arrowhead S2<br />
Sagittaria graminea grassleaf arrowhead S2<br />
Sagittaria lancifolia var. media bull-tongue arrowhead S1.1<br />
Sagittaria latifolia var. pubescens hairy arrowhead S3<br />
Sagittaria rigida sessile-fruited arrowhead SH<br />
Sagittaria spatulata tidal arrowhead S1<br />
Sagittaria subulata strap-leaf arrowhead S2<br />
Salicornia bigelovii dwarf glasswort S1<br />
Salix discolor pussy willow SU<br />
Salix eriocephala heart-leaved willow SU<br />
Salix humilis var. humilis prairie willow SU<br />
Salix humilis var. tristis dwarf prairie willow SU<br />
Salix interior s<strong>and</strong>bar willow SH<br />
Salix lucida shining willow SU<br />
Salix sericea silky willow S1<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Global<br />
Status<br />
Sanguisorba canadensis Canada burnet SH<br />
Sanicula maril<strong>and</strong>ica Maryl<strong>and</strong> black snakeroot S1.1<br />
Sanicula trifoliata large-fruited snakeroot S1.1<br />
Sarcocornia pacifica perennial glasswort S3<br />
Sarracenia purpurea var. purpurea Northern purple pitcherplant S2<br />
Sceptridium oneidense blunt-lobe grapefern SU<br />
Schizachyrium littorale seaside bluestem S3<br />
Schizaea pusilla curly-grass fern S1.1<br />
Schoenoplectus etuberculatus Canby's bulrush S1<br />
Schoenoplectus purshianus var. purshianus bristled weakstalk bulrush S2<br />
Schoenoplectus purshianus var. williamsii bristleless weakstalk bulrush S2<br />
Schoenoplectus smithii var. setosus Smith's bristled bulrush S1.1<br />
Schoenoplectus smithii var. smithii Smith's bulrush SH<br />
Schoenoplectus subterminalis water bulrush S2<br />
Schwalbea americana American chaffseed SX G2 LE<br />
Scirpus atrovirens a bulrush S1<br />
Scirpus expansus red-stem bulrush S2<br />
Scirpus hattorianus bulrush SU<br />
Scirpus pendulus pendulous bulrush S2<br />
Scleria muehlenbergii Muhlenberg's nutrush S1<br />
Scleria nitida shining nutrush SH<br />
Scleria pauciflora var. caroliniana hairy few-flowered nutrush S1<br />
Scleria pauciflora var. pauciflora smooth few-flowered nutrush S1<br />
Scleria reticularis reticulated nutrush S3<br />
Scleria triglomerata whip nutrush S2<br />
Sclerolepis uniflora one-flowered bog button S2<br />
Scrophularia lanceolata hare's figwort SH<br />
Scutellaria galericulata hooded skullcap S1<br />
Scutellaria leonardii dwarf skullcap SH<br />
Scutellaria nervosa veined skullcap SH<br />
Scutellaria saxatilis rock skullcap SH<br />
Sedum ternatum woodl<strong>and</strong> stonecrop S2<br />
Selaginella apoda meadow spikemoss S3<br />
Selaginella rupestris ledge spikemoss SX<br />
Senna maril<strong>and</strong>ica Maryl<strong>and</strong> senna SH<br />
Sideroxylon lycioides buckthorn S1.1<br />
Silene caroliniana var. pensylvanica Northern wild pink S1<br />
Silene virginica fire-pink S1<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Sisyrinchium atlanticum Eastern blue-eyed-grass S3<br />
Sisyrinchium mucronatum Michaux's blue-eyed-grass S1.1<br />
Smallanthus uvedalius yellow-flowered leafcup S3<br />
Smilax bona-nox saw greenbrier S1<br />
Smilax hispida weak-prickle greenbrier S1<br />
Smilax pseudochina long-stalk greenbrier S2<br />
Smilax walteri Walter's greenbrier S3<br />
Solidago arguta var. arguta cutleaf goldenrod S1<br />
Solidago hispida hairy goldenrod SU<br />
Solidago latissimifolia Elliott's goldenrod S1<br />
Solidago patula var. patula roundleaf goldenrod S3<br />
Solidago sempervirens var. mexicana small-headed seaside goldenrod SU<br />
Solidago squarrosa squarrose goldenrod SH<br />
Solidago stricta w<strong>and</strong>like goldenrod SX<br />
Solidago tarda late goldenrod S1.1<br />
Solidago uliginosa bog goldenrod S1.1<br />
Solidago ulmifolia var. ulmifolia elm-leaf goldenrod S2<br />
Spartina pectinata fresh water cordgrass S1.1<br />
Spergularia salina salt marsh s<strong>and</strong>spurry SU<br />
Sphenopholis intermedia slender wedgescale grass SU<br />
Sphenopholis obtusata prairie wedgescale grass SU<br />
Sphenopholis pensylvanica swamp wedgescale grass S1<br />
Spiraea alba var. alba narrowleaf white spiraea S1<br />
Spiraea alba var. latifolia broad-leaf white spiraea S1<br />
Spiranthes lacera var. gracilis Southern slender ladies'-tresses S2<br />
Spiranthes lucida shining ladies'-tresses SH<br />
Spiranthes praecox grassleaf ladies'-tresses SH<br />
Spiranthes tuberosa little ladies'-tresses SH<br />
Spiranthes vernalis twisted ladies'-tresses S2<br />
Sporobolus cl<strong>and</strong>estinus rough dropseed S1<br />
Sporobolus compositus var. compositus tall dropseed SH<br />
Stachys aspera rough hedge-nettle SH<br />
Stachys hyssopifolia var. hyssopifolia hyssopleaf hedge-nettle SU<br />
Stachys pilosa marsh hedge-nettle SU<br />
Stachys tenuifolia smooth hedge-nettle S1.1<br />
Stellaria alsine trailing starwort S2<br />
Stenanthium leimanthoides death-camus SH<br />
Suaeda linearis narrow-leaf seepweed S3<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Symphyotrichum concolor var. concolor Eastern silvery aster SH<br />
Symphyotrichum cordifolium heart-leaf aster S3<br />
Symphyotrichum dumosum bushy aster SU<br />
Symphyotrichum ericoides var. ericoides white heath aster SU<br />
Symphyotrichum laeve var. concinnum narrow-leaved smooth blue aster S1<br />
Symphyotrichum laeve var. laeve smooth blue aster S1<br />
Symphyotrichum prenanthoides crooked-stem aster S1<br />
Symphyotrichum racemosum small white aster SU<br />
Taenidia integerrima yellow pimpernel S1.1<br />
Taxodium distichum bald cypress S2<br />
Tephrosia spicata spiked hoary-pea SH<br />
Teucrium canadense var. virginicum American germ<strong>and</strong>er S3<br />
Thalictrum dioicum early meadowrue S1<br />
Thalictrum revolutum waxleaf meadowrue S1<br />
Thaspium barbinode hairy-jointed meadow-parsnip S1<br />
Thelypteris simulata bog fern S2<br />
Toxicodendron pubescens poison oak S2<br />
Toxicodendron vernix poison sumac S3<br />
Trachelospermum difforme climbing dogbane S1<br />
Tradescantia virginiana Virginia spiderwort S3<br />
Triadenum fraseri Northern marsh St. John's-wort S1.1<br />
Triantha racemosa coastal false-asphodel SX<br />
Trichophorum planifolium bashful bulrush S2<br />
Trichostema setaceum narrowleaf bluecurls S1<br />
Tridens chapmanii Chapman's purple-top S1.1<br />
Trientalis borealis subsp. borealis Northern starflower S1<br />
Triglochin striata three-ribbed arrow-grass SH<br />
Trillium cernuum nodding trillium S2<br />
Trillium erectum ill-scented trillium S1.1<br />
Triosteum angustifolium var. angustifolium yellowleaf tinker's-weed S1<br />
Triosteum aurantiacum var. aurantiacum c<strong>of</strong>fee tinker's-weed S1<br />
Triosteum perfoliatum perfoliate tinker's-weed S1.1<br />
Triphora trianthophoros nodding pogonia S1<br />
Tsuga canadensis Eastern hemlock S1<br />
Turritis glabra tower-mustard SH<br />
Typha domingensis Southern cattail SU<br />
Utricularia cornuta horned bladderwort SH<br />
Utricularia geminiscapa hidden-fruited bladderwort S3<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Utricularia gibba humped bladderwort S3<br />
Utricularia inflata large swollen bladderwort S1<br />
Utricularia juncea Southern bladderwort S2<br />
Utricularia minor lesser bladderwort SX<br />
Utricularia purpurea purple bladderwort S1<br />
Utricularia resupinata Northeastern bladderwort S2<br />
Utricularia striata fibrous bladderwort S3<br />
Utricularia subulata zigzag bladderwort S2<br />
Vaccinium angustifolium late lowbush blueberry SH<br />
Vaccinium fuscatum black highbush blueberry SU<br />
Vaccinium macrocarpon large cranberry S3<br />
Vallisneria americana tape-grass S3<br />
Veratrum latifolium broadleaf bunchflower SH<br />
Veratrum virginicum Virginia bunchflower S2<br />
Verbena simplex narrowleaf vervain SU<br />
Verbesina alternifolia wingstem SH<br />
Vernonia glauca woodl<strong>and</strong> ironweed S3<br />
Veronica americana American speedwell S1<br />
Veronica anagallis-aquatica water speedwell SU<br />
Veronicastrum virginicum Culver's-root S1<br />
Viburnum cassinoides Northern wild raisin SH<br />
Viburnum lentago nannyberry S1.1<br />
Viburnum rafinesquianum downy arrow-wood S1<br />
Viola bl<strong>and</strong>a smooth white violet S3<br />
Viola brittoniana var. brittoniana coast violet S3<br />
Viola fimbriatula fringed violet SU<br />
Viola labradorica American dog violet S3<br />
Viola macloskeyi var. pallens smooth white violet S1<br />
Viola palmata palmate-leaved violet S3<br />
Viola pedata bird's-foot violet S1<br />
Viola rotundifolia roundleaf violet S2<br />
Viola sagittata arrowleaf violet SU<br />
Viola striata striped violet S3<br />
Vulpia sciurea squirrel six-weeks grass SU<br />
Wolffia columbiana Columbia watermeal SU<br />
Wolffiella gladiata sword bogmat SU<br />
Woodsia obtusa subsp. obtusa blunt-lobe woodsia S1<br />
Xerophyllum asphodeloides Eastern turkeybeard SX<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong><br />
Scientific Name Common Name<br />
State<br />
Conservation<br />
Status<br />
Xyris fimbriata fringed yellow-eyed-grass S1<br />
Xyris smalliana Small's yellow-eyed-grass S2<br />
Xyris torta twisted yellow-eyed-grass S3<br />
Zannichellia palustris horned pondweed S2<br />
Zanthoxylum americanum Northern prickly-ash SH<br />
Zizia aptera wingless Alex<strong>and</strong>er S1<br />
Zizia aurea golden Alex<strong>and</strong>er S2<br />
Zostera marina var. stenophylla eel-grass S1<br />
Global<br />
Status<br />
Federal<br />
Status
<strong>Rare</strong> <strong>and</strong> <strong>Uncommon</strong> <strong>Vascular</strong> <strong>Plants</strong> <strong>of</strong> <strong>Delaware</strong>
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