中国杜鹃花属火红杜鹃亚组的研究

火红杜鹃亚组是杜鹃花属中常绿杜鹃亚属的一个较大的亚组，含27种、8亚种和24变种。本 文根据形态特征、种的亲缘关系和地理分布，将所有的种分为4个植物群，并讨论了它们的演化。其中最后的一群即植物群D在形态演化上有较为进化的特征。本亚组植物的现代分布中心在中国西南部的横断山区。

A Study on the Genus Rhododendron L. Subsection Neriiflora Sleumer in China

 The subsection Neriiflora Sleumer is one of the largest subsections of Rhododen- dron subgenus Hymenanthes, containing 27 species, 8 subspecies and 24 varieties.   All the species are divided into four groups according to morphological characters, relationships am- ong the species and their geographical distribution.   The evolution and relationships of the group are discussed.  The Group D is of highly specialized morphological characters.  The subsection has its modern distribution center in the  Hengduan  Mountains  in   south-westernChina.