叶下珠科珠子木属一新异名

A New Synonym in Genus Phyllanthodendron Hemsl. (Phyllanthaceae)

摘要:

岩生珠子木（Phyllanthodendron petraeum P.T.Li）和圆叶珠子木（P.orbicularifolium P.T.Li）均为中国广西壮族自治区特有种，二者曾被认为基于叶片质地与形状、叶脉特征、花盘腺体形状以及花柱开裂程度等一系列形态特征可进行区分，然而基于近年来查阅大量标本和野外考察工作认为二者实为同种，故在此将后者处理为前者的异名。

Abstract:

Phyllanthodendron petraeum P. T. Li and P. orbicularifolium P. T. Li are two species endemic to Guangxi, China. A series of morphological characters of leaves, disk glands and styles were considered to be important to distinguish them from each other in previous taxonomic literature. However, results from recent examination of herbarium specimens and filed investigations suggested that all the cited characters could not differentiate the two species. We believe that P. petraeum and P. orbicularifolium are conspecific. We therefore reduce P. orbicularifolium as the synonymy of P. petraeum.