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Issue: Vol. 480 No. 2: 20 January 2021
Type: Article
Published: 2021-01-20
DOI: 10.11646/phytotaxa.480.2.9
Page range: 201–209
Abstract views: 33
PDF downloaded: 1

Begonia nangunheensis, a new species of Begoniaceae from Yunnan province, China

Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China Karst Conservation Initiative of Yunnan, Kunming 650201, China University of Chinese Academy of Sciences, Beijing 100049, China
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China Karst Conservation Initiative of Yunnan, Kunming 650201, China
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China University of Chinese Academy of Sciences, Beijing 100049, China
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China University of Chinese Academy of Sciences, Beijing 100049, China
Management Bureau of Nangunhe National Nature Reserve, Cangyuan Va Autonomous County, 677400, Yunnan, China
Management Bureau of Caiyanghe Provincal Nature Reserve, Pu’er City, 665000, Yunnan, China
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China Karst Conservation Initiative of Yunnan, Kunming 650201, China
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YU-MIN SHUI

 

 

Begonia sect. Platycentrum Begonia siamensis Southwestern China Thailand Eudicots

Abstract

Begonia nangunheensis belonging to Begonia sect. Platycentrum is described and illustrated as a new species in Caryota obtusa forests in Yunnan province of China. It is similar to Begonia siamensis in 3-winged fruits, 2-loculed ovary and axile placentation with 2 segments per locule, but differs in its glabrous petiole and abaxial leaf-blade, ovate outer tepals and oblanceolate to narrowly obovate inner tepals of staminate flower, and the unequal pistillate tepals. The new species is assigned to Critically Endangered according to the guidelines of IUCN Red List Categories and Criteria (version 13).