Gnetum chinense, a new species of Gnetaceae from southwestern China

By

Jin, Wei-Yin
Liu, Bing (Botanist)
Zhang, Shou Zhou
Wan, Tao
Hou, Chen
Yang, Yong

Type

Article

Date of Publication

2020

Original Publication

PhytoKeys

Volume

148

Pages

105--117

Subjects

China , Gnetum , Morphology , Phylogeny , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.148.48510

 

Abstract

Gnetum chinensesp. nov., a new lianoid species of Gnetaceae, is described from southwestern China. The new species is morphologically similar to G. montanum Markgr. in its oblong elliptic leaves and the ovoid to ellipsoid chlamydosperm, but differs from the latter by its shorter male spikes having fewer involucral collars (7–10 vs. 13–18 in G. montanum). We also did a new molecular analysis using one nuclear marker (i.e. nrITS) and four chloroplast markers (i.e. matK gene, rpoC1 intron, psbB-rps12 IGS, and trnF-trnV IGS). The result suggests that this specific clade is sister to a large clade consisting of all other known Chinese lianoid species of Gnetum except G. parvifolium (Warb.) W.C. Cheng.