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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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!) |
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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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DOI: https://doi.org/10.1007/s00606-021-01765-0