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Chicomendes (Euphorbiaceae, Tragiinae): a new Amazonian genus segregated from Tragia

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Abstract

We propose here a new genus to accommodate Tragia rubiginosa, previously considered endemic to Peru, based on morphological characters, including pollen. A multivariate analysis was performed to assess the dissimilarity of T. rubiginosa in relation to Tragia and the other genera of Tragiinae. In this paper, we present a detailed morphological description, a full pollen description of the new genus, its geographic and ecological distribution, an identification key for all genera of Tragiinae, and a comparative table of the sections of Tragia and the American genera of Tragiinae.

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Acknowledgements

The authors thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico for the scholarship granted to the first author; the Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco for financial support (APQ-0917-2.03/17); the Universidade Federal Rural de Pernambuco for institutional support; the Research Support Center – UFRPE (CENAPESQ); Dr. Maria Rita Cabral Sales de Melo (herbarium PEUFR) and Dr. Ariadne do Nascimento Moura for providing the infrastructure; Nathan Pessoa for his assistance in capturing the SEM images; and the curator Helena Souza (IAN) for the biological specimens.

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Authors and Affiliations

  1. Programa de Pós-Graduação em Biodiversidade, Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, 52171–900, Brazil

    Wesley Patrício Freire de Sá Cordeiro, Sarah Maria Athiê-Souza, Maria Teresa Buril & Margareth Ferreira de Sales

  2. Programa de Pós-Graduação em Biodiversidade e Conservação, Unidade Acadêmica de Serra Talhada, Recife, PE, 56900–000, Brazil

    André Laurênio de Melo

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  1. Wesley Patrício Freire de Sá Cordeiro
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  2. Sarah Maria Athiê-Souza
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Correspondence to Sarah Maria Athiê-Souza.

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Appendices

Appendix

Specimens used in the illustrations of Figs. 4 and 5. Samples studied in herbaria [*].

Species

Specimens

Tragia rubiginosa Huft

Brazil. Amazonas: rio Tefé, Munguentaua, igapó, 13 Jun 1950, (fl.) R.L. Fróes 26270 (IAN 000055046!*)

Acidoton urens Sw.

Jamaica: 16 Mar 1959 (fl., fr.), E.T. Robertson 5486 (K000716149!)

Bia lessertiana Baill.

Brazil, Amapá: Coastal Region, 9 Aug 1962 (fl), J.M. Pires and P.B. Cavalcante 52436 (IAN 117925!*)

Cnesmone javanica Blume

Indonesia, Sumatra: 7–8 Oct 1928 (fl., fr.), D. Maradja and A.R.S. Toroes 1486 (NY 03951538!)

Ctenomeria capensis Harv. ex Sond

South Africa: Dec 1889 (fl.), H.G. Flanagan 451 (K000692558!)

Gitara nicaraguensis (Hemsl.) Card.-McTeag. & L. J.Gillespie

Brazil, Amazonas: Namorado Novo, 30 Jul 1971(fl.), G.T. Prance et al. 14.683 (NY01300750!)

Megistostigma cordatum Merr.

Philippines. Samar: 3 Apr 1914 (fl), M. Ramos catalogue number 17591 (US00096427!)

Pachystylidium hirsutum Pax & K.Hofmm

Indonesia, Java: 18 Feb 1843 (fl.), H. Zollinger 92 (P 00379079!)

Platygyna hexandra (Jacq.) Müll.Arg

Cuba: 14 Feb 1927 (fl., fr.), J.G. Jack 4735 (K000716134!)

Cuba: 16 May 1895 (fl.), R. Combs 40 (K000716136!)

Sphaerostylis talusneana Baill.

Madagascar: Lokobe Forest, Mar 1962–1963 (fl.), M. Keraudren 1568 (P04786222!)

S. perrieri Leandri

Madagascar: Brickaville, Jul 1914 (fl.), Perrier 1990 (P00697857!)

Tragia cearensis Pax & K.Hoffm

Brazil, Ceará: Meruoca, 25 Feb 1981 (fl., fr.), A. Fernandes and P. Martins s.n. (EAC 9741!*)

Tragiella annomala Prain

Tanzania: Ukinga-Berge, 1899W, Goetze 907 (BR00000624395!)

Tragiella natalensis (Sond.) Pax & K.Hoffm

Tanzania, Lindi: Rondo Plateau, 17 Feb 1991 (fl), S. Bidgood et al. 1609 (BR00000573089!)

Zuckertia cordata Baill.

Costa Rica, Cantón de Sarapiqui: Camino a la Colonia Virgen del Socorro, 11 Jan 1996 (fl), J. González 1045 (MO 5822867!)

Information on Electronic Supplementary Material

Online Resource 1. Morphological characteristics of Tragiinae taxa, used in the analysis of UPGMA.

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de Sá Cordeiro, W.P.F., Athiê-Souza, S.M., Buril, M.T. et al. Chicomendes (Euphorbiaceae, Tragiinae): a new Amazonian genus segregated from Tragia. Plant Syst Evol 307, 46 (2021). https://doi.org/10.1007/s00606-021-01765-0

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