Anatomicall study of the Genus Lathyrus L.(Fabaceae) in Iran

Genus Lathyrus belongs to Family (Fabaceae) that has about 160 species annual and perennial in world. This Genus belongs to the Vicieae tribe. In this research anatomicall structure of 14 taxa of Genus Lathyrus have been studied and compared. Anatomicall characters are used in order to comfirmate the morphologicall characters, so tomicall structure of stem and petiole of varius population in each taxon have been studied, specially size of wing in stem or petiole, the number of vascular bundles of stem and petiole, and also their appearance are important anatomicall characters in taxon. In final anatomical study has important role in revision of Lathyrus at sectional level.