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Pollinarium Morphology of 17 Species and 1 Subspecies of Cynanchum ( Asclepiadaceae )
Author(s): 
Pages: 1758-1762
Year: Issue:  9
Journal: Acta Botanica Boreali-Occidentalia Sinica

Keyword:  鹅绒藤属花粉器萝藦科分类;
Abstract: 利用光学显微镜对萝藦科鹅绒藤属17种1亚种植物花粉器的形态特征进行观察.结果表明:(1)该属植物花粉器形状大小在各个种间差异较大:花粉块下垂,通常呈球形、长球形和超长球形,平均大小为327.2 μm×183.9 μm;着粉腺呈长圆形、近圆形、近方形和近三角形,平均大小为406.1 μm×231.4 μm. (2)翅果杯冠藤的花粉块柄最不发达,豹药藤的花粉块柄最发达.(3)白薇与朱砂藤、刺瓜与轮叶白前的花粉器特征均较相近.研究结果支持《中国植物志(第63卷)》中对催吐白前组(Sect.Vincetoxicum)的分组处理;支持将娃儿藤属(Tylophora)作为一个独特类群的观点;因国内翅果杯冠藤和美翼杯冠藤的花粉器形态存在差别,故不支持Flora of China(Vol.16)中认为翅果杯冠藤是美翼杯冠藤的错误鉴定与处理.
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