铁线莲属单性铁线莲组修订

对毛茛科铁线莲属Clematis L.的单性铁线莲组sect. Aspidanthera Spach s.l.进行了全面修订，确定此组共含72种和15变种，这些被归类于6个亚组中，其中包括首次描述的1系、5种和2变种，以及做出的2新等级。对单性铁线莲组的分类学简史和地理分布做了介绍。写出了组、亚组、系的形态特征和地理分布，分亚组检索表及各亚组的分种检索表；以及各种植物的形态描述、地理分布、生长环境等，并附有多幅插图。在研究了此组全部种类的标本之后，观察到此组几个重要形态特征的演化趋势：(1)萼片在数目上由

A revision of Clematis sect.Aspidanthera s.l.( Ranunculaceae)

In this paper Clematis sect. Aspidanthera s. 1. is revised. Seventy-two species and 15 varieties are recognized. They are keyed, described, and in most cases illustrated, and are classified into six subsections. Of them, one series, five species, and two varieties are described as new,and two new ranks are proposed. Brief taxonomic history and geographical distribution of the section are given, the evolutionary trends of several important morphological characters observed are enumerated, and the relationships of its subsections are discussed. As a result, subsect. Dioicae,which shows striking resemblance in both habit and floral structure to sect. Clematis subsect.Clematis, is regarded as the primitive group, while subsect. Insidiosae, bearing pistillate flower with erect sepals and no staminodes, is regarded as the advanced group within the section.