Taxonomic notes on the genus Millettia (Fabaceae: Millettieae) in Vietnam

ZHU-QIU SONG; SHI-JIN LI; QUANG NAM VU; NGUYEN SINH KHANG

doi:10.11646/phytotaxa.571.2.4

Issue: Vol. 571 No. 2: 3 November 2022

Type: Article

Published: 2022-11-03

DOI: 10.11646/phytotaxa.571.2.4

Page range: 169-185

Abstract views: 65

PDF downloaded: 3

**Taxonomic notes on the genus Millettia (Fabaceae: Millettieae) in Vietnam**

ZHU-QIU SONG⁺⁻
SHI-JIN LI⁺⁻
QUANG NAM VU⁺⁻
NGUYEN SINH KHANG⁺⁻

Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, P. R. China; South China National Botanical Garden, Guangzhou, P. R. China

College of Forestry Biotechnology, Vietnam National University of Forestry, Xuanmai, Hanoi, Vietnam

Department of Plant Resources, Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hanoi, Vietnam

Asia lectotypification Leguminosae new combination synonym taxonomy Eudicots

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Abstract

Millettia is a complex genus of the tribe Millettieae (Fabaceae). In this paper we provide a synopsis of the species of the genus from Vietnam, based on the examination of literature and specimens as well as field surveys. Millettia boniana and M. setigera are proposed as new synonyms of Derris tonkinensis and M. cubittii, respectively. Millettia densiflora, a species most recently described from Laos, is newly reported in central and southern Vietnam. Millettia acutiflora is treated under the newly reinstated genus Imbralyx as I. acutiflorus. Twelve species and one variety are excluded from the list of Vietnamese species of Millettia. As a result, fourteen species and one variety of Millettia are recognized in Vietnam. A key to the species and lectotypification for seventeen names are provided.

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