<正>Lathyrus L. belongs to the tribe Fabeae within the Fabaceae(Leguminosae). It contains more than 200 taxa and has an almostworldwide distribution (Allkin et al., 1986). Tutin & Heywood (1981)reported, in Flora Europaea, that 54 species are known from the area.In Flora of Turkey, Davis (1970) stated that the genus is representedby 67 taxa at the species, subspecies, and variety level. However, thenumber of taxa known from Turkey has since increased to 75 (Davis