The genus Nekemias (Vitaceae) was first recognized by Rafinesque in 1838. It has been treated as a synonym of Amp elopsis Michx. Recent phylogenetic studies suggest that Amp elopsis as traditionally delimited is paraphyletic. To maintain the monophyly of each of the genera of Vitaceae, we herein segregate the Amp elopsis sect. Leeaceifbliae lineage from Amp elopsis and recognize these taxa in Nekemias Raf., which has a disjunct distribution in eastern to southeastern Asia and eastern North America. Nomenclatural changes are made for nine species and one variety: Nekemias arborea (L.) J. Wen & Boggan, N cantoniensis (Hook. & Am.) J. Wen & Z.L. Nie, N celebica (Suess.) J. Wen & Boggan, N chaffanjonii (H. Lev. & Van.) J. Wen & Z.L. Nie, N gongshanensis (C.L. Li) J. Wen & Z.L. Nie, N grossedentata (Hand.-Mazz.) J. Wen & Z.L. Nie, N hypoglauca (Hance) J. Wen & Z.L. Nie, N megalophylla (Diels & Gilg) J. Wen & Z.L. Nie, N megalophylla var. jiangxiensis (WT. Wang) J. Wen & Z.L. Nie, and N rubifblia (Wall.) J. Wen & Z.L. Nie. A taxonomic key is provided for the genus to facilitate identification.
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1.Smithsonian Inst, Dept Bot, MRC 166, Washington, DC 20013 USA 2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 3.Jishou Univ, Key Lab Plant Resources Conservat & Utilizat, Jishou 416000, Hunan, Peoples R China 4.Jishou Univ, Coll Biol & Environm Sci, Jishou 416000, Hunan, Peoples R China
Wen, Jun,Boggan, John,Nie, Ze-Long. Synopsis of Nekemias Raf., a segregate genus from Ampelopsis Michx. (Vitaceae) disjunct between eastern/southeastern Asia and eastern North America, with ten new combinations[J]. PHYTOKEYS,2014,42(1):11-19.