The surface characters of 12 samples of 3 dodder species in Yunnan were observed under microscope and SEM . The results were as follows: (1) The hila of Cuscuta reflexa Roxb. were linear or curved and sunken.

• 应用解剖镜和扫描电镜观察了产于云南的 3种 12份菟丝子的种子形态 ,结果如下 :( 1)大花菟丝子种脐线形或弧形凹陷 ,晕轮椭圆形具网状纹饰 ,种皮具条状纹饰 ,条纹宽大呈块状 ,绞链状连接 ,排列致密 ;