Taxonomy of the Asian Gymnema latifolium (Apocynaceae, Asclepiadoideae, Marsdenieae), including lectotypification of the synonymous G. khandalense

Meve, Ulrich; Alejandro, Grecebio Jonathan D.

doi:10.3372/wi.43.43108

Cited by 3 publications

(1 citation statement)

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“…Although the former has been traditionally distinguished from the latter by a well-developed corolline corona and the lack of a gynostegial corona, the generic boundaries have been obscured by the presence of many taxa with combinations of characteristics intermediate between those used to diagnose these two genera. For instance, some Marsdenia species bear both corolline and gynostegial coronas, whereas some Gymnema species have a gynostegial corona (Forster 1995a, b;Meve & Alejandro 2013;Endress et al 2018). The very broad circumscription of Marsdenia is not followed in more recent literature (Omlor 1998;Endress et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Gymnema wiyadae (Apocynaceae: Asclepiadoideae), a new species from eastern Thailand

Kidyoo

2021

Kew Bull

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Gymnema wiyadae A.Kidyoo, recently discovered in eastern Thailand, is here described and compared with the morphologically similar species, G. inodorum (Lour.) Decne. and G. foetidum Tsiang. These three species are characterised by umbelliform cymes with subhypocrateriform, yellow flowers and corolline corona of five longitudinal ridges with lines of stiff golden-brown trichomes running along two sides. Gymnema wiyadae is, however, clearly distinguished from the other two species by its pubescent stem and branches with trichomes arranged in two rows, stout peduncles and pedicels, and style-head with obtuse apex. Illustrations and photographs of the new species as well as an updated identification key for all known species of Gymnema R.Br. occurring in Thailand are provided.

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Section: Introductionmentioning

confidence: 99%