A new species of Hiptage (Malpighiaceae) from northwest Yunnan (China) based on molecular and morphological data

By

Zhang, Tongtong
Yang, Shuyun
Tan, Ke
Ren, Ming-Xun

Type

Article

Date of Publication

2023

Original Publication

PhytoKeys

Volume

232

Pages

45--57

Subjects

flora of Yunnan , Hengduan Mountains , Hiptage , Malpighiaceae , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.232.106675

 

Abstract

Hiptage stenopterum K.Tan & M.X.Ren, a new species of Hiptage collected from a deep valley close to the Nujiang Gorge, northwest of Yunnan Province, China, is described and illustrated based on molecular and morphological data. The new species was found isolated in an entrenched valley of the Laowo River, a tributary of the Nujiang River, at the northern edge of the distribution range of the genus. H. stenopterum shares some morphological similarities with the narrowly endemic H. incurvatum and H. lushuiensis. However, H. stenopterum is easily distinguished by its oblanceolate lateral wing of winged mericarp, 10 to 12 calyx glands, and branchlets densely rusty tomentose. The new species status is also supported by molecular phylogenetic analyses based on nuclear ribosome internal transcribed spacer (nrITS), which showed distinct systematic boundaries from the most morphologically similar species, H. incurvatum and their morphological relatives, H. lushuiensis.