Gnetum chinense, a new species of Gnetaceae from southwestern China

被引：2
|
作者：
Jin, Wei-Yin [1 ,5 ]
Liu, Bing [1 ]
Zhang, Shou-Zhou [2 ]
Wan, Tao [2 ]
Hou, Chen [3 ,4 ]
Yang, Yong [1 ]
机构：
[1] Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, 20 Nanxincun, Beijing 100093, Peoples R China
[2] Shenzhen Fairy Lake Bot Garden, Shenzhen, Peoples R China
[3] Guangdong Acad Forestry, Guangdong Prov Key Lab Silviculture Protect & Uti, Guangzhou 510520, Peoples R China
[4] Guangdong Acad Forestry, Guangzhou 510520, Peoples R China
[5] Tonghua Normal Univ, 950 Yucai Roach, Tonghua City 134000, Jilin, Peoples R China
来源：
PHYTOKEYS | 2020年 / 148期
基金：
中国国家自然科学基金;
关键词：
Gnetum; China; morphology; phylogeny; taxonomy; GNETALES;
D O I：
10.3897/phytokeys.148.48510
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Gnetum chinense sp. 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.
引用
收藏
页码：105 / 117
页数：13
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