Sinosenecio jiangxiensis (Asteraceae), a new species from Jiangxi, China

被引：1

作者：

Liu, Ying ^{[1
]}

Yang, Qin-Er ^{[2
]}

机构：

[1] Sun Yat Sen Univ, Sch Life Sci, Guangzhou 510275, Guangdong, Peoples R China

[2] Chinese Acad Sci, S China Bot Garden, Key Lab Plant Resources Conservat & Sustainable U, Guangzhou 510650, Guangdong, Peoples R China

来源：

BOTANICAL STUDIES | 2012年 / 53卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Asteraceae; Chromosome number; Karyotype; Senecioneae; Sinosenecio jiangxiensis;

D O I：

暂无

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Sinosenecio jiangxiensis Y. Liu & Q. E. Yang, a new species from Jiangxi, China, is described and illustrated and its chromosome number (2n = 48) is reported. The karyotype is formulated as 2n = 42m + 4sm + 2st (2sat). Sinosenecio jiangxiensis is similar to S. guangxiensis C. Jeffrey & Y. L. Chen and S. latouchei (J. F. Jeffrey) B. Nord. in leaf shape, abaxial leaf surface indumentum and achene pubescence, but differs in its smaller stature, smaller basal leaves, stem leafless or bearing only 1 bract-like leaf near the middle and thus more typically scapiform, and usually solitary capitula. Analysis of ITS sequences further confirmed the distinction of S. jiangxiensis and also revealed that S. jiangxiensis is closely related to S. guangxiensis, S. jiuhuashanicus C. Jeffrey & Y. L. Chen, S. latouchei, S. saxatilis Y. L. Chen, and S. wuyiensis Y. L. Chen, with S. jiuhuashanicus, S. latouchei and S. wuyiensis being the closest relatives. A detailed comparison of these species is made, and a key to them is provided.

引用

页码：401 / 414

页数：14

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