Carex qingyuanensis (Cyperaceae), a new species from Guangdong, China

被引：0
|
作者：
Li, Ya-Li [1 ,2 ]
Deng, Shuang-Wen [1 ]
Luo, Jin-Chu [1 ]
Li, Ming-Xia [1 ,3 ]
Zou, Li-Ting [1 ]
Zeng, Qiu-Gen [4 ]
Chen, Hong-Feng [1 ]
机构：
[1] Chinese Acad Sci, Key Lab Plant Resources Conservat & Sustainable Ut, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou 510650, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Zhongkai Univ Agr & Engn, Guangzhou 510225, Peoples R China
[4] Qingyuan Forestry Bur, Qingyuan 511518, Peoples R China
来源：
PHYTOKEYS | 2024年 / 241期
关键词：
Carex sect. Siderostictae s.s; morphology; new species; taxonomy; SP-NOV CYPERACEAE; SECT; RHOMBOIDALES; ZHEJIANG; HAINAN; SEDGE; EVOLUTIONARY; PHYLOGENY; SEQUENCES; MITRATAE; GUANGXI;
D O I：
10.3897/phytokeys.241.117734
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Carex qingyuanensis, a new species of Cyperaceae from Guangdong Province, China, is described and illustrated. The new species is morphologically similar to Carex peliosanthifolia F. T. Wang & Tang ex P. C. Li, but it can be distinguished by the racemose inflorescence branches appearing single (rarely binate or ternate) (vs. binate or ternate), one (rarely two or three) (vs. 1-3) spiked, male part of linear-cylindrical spikes much longer than the female part (vs. just male part short-cylindrical and slightly longer than female part), style base thickened (vs. not thickened) and perigynium horizontally patent with a short (vs. long and excurved) beak. Phylogenetic analysis, based on the two nuclear DNA regions (ETS 1f and ITS) and three chloroplast DNA regions (matK, ndhF and rps16), suggests that the new species belongs to sect. Siderostictae s.s. of subg. Siderosticta and shows a closer phylogenetic relationship to Carex scaposa C. B. Clarke.
引用
收藏
页码：155 / 168
页数：14
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