Saturday, March 30, 2019

[Botany • 2019] Sorbus lushanensis (Rosaceae) • A New Species from China


Sorbus lushanensis Xin Chen & Jing Qiu

in Qiu, Zhao, Qi & Chen, 2019. 

Abstract
Sorbus lushanensis Xin Chen & Jing Qiu, sp. n. (Rosaceae), a new simple-leaved species belonging to Sorbus subg. Aria sect. Alnifoliae, is described from Anhui and Jiangxi provinces in China. Illustrations, photographs of wild plants and a distribution map are presented. The new species is morphologically similar to S. folgneri, but can be distinguished easily by its abaxially greenish-grey tomentose leaves, scale-like stipules and glabrous styles.

Keywords: Sorbus, new species, taxonomy, China


Figure 1. Holotype of Sorbus lushanensis sp. n.
Scanned by Xiaochen Zhang. 

Figure 3. Sorbus lushanensis sp. n.
A flower branch and leaves B flower C petal D styles E stamens F fruit G seed.
Drawn by Yuxuan Bao.

Sorbus lushanensis Xin Chen & Jing Qiu, sp. n.

Diagnosis: Sorbus lushanensis is morphologically most similar to S. folgneri (C. K. Schneid.) Rehd., but differs by its leaf blade abaxially greenish-grey tomentose, stipules smaller, pedicels longer, petals larger and styles glabrous.

Figure 2. Sorbus lushanensis sp. n.
A habit (A plant at Wulao Peak, Lushan National Park, Jiangxi province) B flowering branch and leaves (from the plant of type specimen) C young inflorescence (from the same plant as habit). 



Etymology: The name “lushanensis” refers to the type locality, Lushan Mountain, Jiangxi Province, China.

Vernacular name: 庐山花楸 (lu shan hua qiu).


 Jing Qiu, Yang Zhao, Qi Qi and Xin Chen. 2019. Sorbus lushanensis, A New Species of Rosaceae from China. PhytoKeys. 119: 97-105. DOI: 10.3897/phytokeys.119.32148