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Article
Published: 2018-07-18

Vincetoxicum xinpingense (Asclepiadeae, Asclepiadoideae, Apocynaceae), a new species from Yunnan Province, China

School of Life Science, Yunnan University, Kunming 650091, 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
College of Life Sciences, Xinyang Normal University, Xinyang 464000, China
School of Life Science, Yunnan University, Kunming 650091, China
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
Ailao Mountains Cynanchum morphology Tylophora Vincetoxicum Xinping Eudicots

Abstract

Vincetoxicum xinpingense, a new species from the Ailao Mountains in Yunnan Province, China, is described and illustrated. It is morphologically similar to V. sublanceolatum, Tylophora forrestii, and T. chingtungensis, but can be distinguished by several characters: shape and size of leaves, size of corolla lobes, length and shape of corona, attachment position of corona to the anthers, and orientation of pollinia. In addition, conservation status and other relevant notes are provided.