12种鹅绒藤属（萝藦科）植物花粉器形态学研究

摘要： 用光学显微镜对萝藦科（Asclepiadaceae）鹅绒藤属（Cynanchum）12种植物花粉器形态进行了观察。结果表明：花粉块的形态有3种类型：球形、长球形和超长球形。着粉腺的形态有6种类型：长圆形、方形、近方形、三角形、正三角形和近三角形。花粉器形态学结果对青羊参（Cynanchum otophyllum）在鹅绒藤属中的分类具有较大意义；支持《中国植物志》第63卷中对催吐白前组（Sect. Vincetoxicum）的分组处理；结合鹅绒藤属花粉块下垂，娃儿藤属（Tylophora）花粉块平展的特点，支持将娃儿藤属作为一个独特类群的观点。

关键词: 鹅绒藤属, 花粉器, 萝藦科, 分类

Abstract: The pollinarium morphology of 12 species of Cynanchum Linn. were observed under light microscope (LM). Three types of pollinia (spheroidal, prolate and perprolate) and six types of retinaculum (oblong, square, near square, regular triangle and near triangle) were observed. This is important for the classification of Cynanchum otophyllum and supports the treatment of Cynanchum Sect. Vincetoxicum in Flora of China(Vol. 63). As the pollinarium in Cynanchum is saggy while that of Tylophora R. Br. is horizontal, it supports that Tylophora should be a unique group.

Key words: Cynanchum, pollinarium, Asclepiadaceae, Taxonomy

中图分类号: 

Q949.776.6

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