Eutrema nanum (Brassicaceae), a new species from Chola Shan, Southwest China

By

Hao, Guoqian
Al-Shehbaz, Ihsan A., (Ihsan Ali) 1939-
Zhang, Lei
Guo, Xinyi
Bi, Hao
Xu, Songbai
Liu, Jianquan

Type

Article

Date of Publication

2018

Original Publication

PhytoKeys

Volume

109

Pages

17-25

Subjects

Cruciferae , Eutrema nanum , Eutrema sinense , molecular phylogeny , Sichuan

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.109.27049

 

Abstract

Eutremananum, a new high-elevation (4500–4600 m) species from Chola Shan, Sichuan (Southwest China), is described and illustrated. It is similar morphologically to E.nepalense but is readily distinguished by having oblong to elliptic or obovate to spatulate (vs. suborbicular to broadly ovate) leaves, glabrous (vs. puberulent) sepals and ovate to oblong fruit 4–7 × 2–3 mm with flattened valves (vs. ovoid to subglobose fruit 2–3 × 1.8–2 mm with rounded valves). The genetic differences amongst E.nanum, E.nepalense and other close relatives are further confirmed by phylogenetic analyses using ITS and cpDNA sequence variations. The new combination E.sinense is proposed.