内蒙古岩黄芪属（HedysarumL．）植物花粉形态及其分类

用扫描电镜观察了内蒙古产岩黄芪属８种、２变种植物的花粉形态．该属植物花粉形态相对一致，但在花粉粒形状、纹饰结构和孔膜等方面有差异．根据形状和孔膜特点本属花粉可分为近球形、近长球形、长球形和超长球形及孔膜外突和不外突序类型；以外壁纹饰特征又可分为网状、细网一穿孔状和穿孔状纹饰三类．结合其他分类学特征．对一些种进行了讨论和分类学处理，同时支持建立新变种：戈壁岩黄芪ＨｅｄｙｓａｒｕｍｆｒｕｔｉｃｏｓｕｍＰａｌｌ．ｖａｒ．ｇｏｂｉｃｕｍＹ．Ｚ．Ｚｈａｏｅｔａｌ．．

The Pollen Morphology of Hedysarum L. in NeiMonggol and Its Clossification

The pollen morphology of 8 species and 2 variety of Hedysarum L. from NeiMonggol has been observed under scanning electron microscope. The .pollen morphology of the genus is relatively similar,but some variations of shape,exine ornamentation and perus membrane of pollen grains are distinguishable. Four different pollen types such as subspheroidal,subprolate, prolate and perprolate can be identified by shape;other two pollen types such as perus membrane protruded and perus membrane no protruded can be recognized by perus membrane and three pollen types for example reticulate,finely reticulate-perforate and perforate can also be recognized by ine ornamentation in general. According to the result of pollen morphology study,we recognized the existence of variety H. fruticosum Pall. var. gobicum Y. Z. Zhao et al.. In addition, some species have been talked and disposed combined with other taxonomy character.