重订羌活属的分类

A reclassification of Notopterygium Boissieu (Umbelliferae)

在野外实地观察和标本整理的基础上 ,检查了羌活属各个分类群的分类问题 ,考证了它们的名称。通过性状分析 ,主要以小总苞片的形状及其相关特征作为属下分类的依据 ,将卵叶羌活N .oviforme改隶于宽叶羌活之下作为亚种处理 ,支持张盍曾在 1 975年将N .franchetii与N .forbesii合并为 1种。如此 ,该属共 5种 ,其中 1种含 1亚种。描述了两个新组 ,对属的特征和地理分布作了补充。近年该属新增加 2种 ,因此分种检索表也作了相应的修改。

WT5BZ]The genus Notopterygium is endemic to China. The plants of this genus are important traditional Chinese medicine. When established by H. de Boissieu in 1903, Notopterygium included only two species, i.e. N. franchetii and N. forbesii . Within nearly a century, five more specific names had been added to this genus, i.e. N. forrestii H. Wolff, N. oviforme Shan, N. incisum Ting ex H. T. Chang, N. pinnatiinvolucellatum Pu et Y. P. Wang, N. tenuifolium Sheh et Pu. Based on field observation and examination of herbarium specimens, all the taxa in this genus were taxonomically reviewed and their nomenclature was carefully checked. N. oviforme was treated as a subspecies under N. forbesii . We agree with Chang He_Tseng in reducing N. franchetii to N. forbesii as a synonym. As a result, five species, one of which contains a subspecies, are recognized. Based on the morphology of involucel bractlets as well as their relevant characters, Notopterygium is divided into two sections. Sect. 1. Notopterygium Basal and proximal cauline leaves 2 ternate to 2～3 ternate pinnate, ultimate divisions broad ovate or ovate lanceolate; involucel bractlets linear, entire, vascular bundles of petiole approximately equal in size. This section contains two species and one subspecies. Sect. 2. Tenuifolium Pu, sect. nov. Basal and proximal cauline leaves 2～3 ternate pinnate, ultimate divisions linear lanceolate, ovate lanceolate or linear; involucel bractlets linear, entire or oblanceolate, 2～3 fid or pinnate at the apex; vascular bundles of petiole unequal in size. This section centains three species.