A NEW SPECIES OF ONOBRYCHIS (FABACEAE) FROM IRAN

Onobrychis marandensis Amirabadi. & Ghanavati, a new species endemic to Iran, is described and illustrated. The new species belongs to Onobrychis Miller subgen. Sisyrosema (Bunge) Grossheim sect. Heliobrychis Bunge ex Boissier. Onobrychis marandensis is distributed in Azerbaijan province in northwestern Iran. It is undoubtedly rather closely related to O. gaubae Bornm., but differs in the shape of the terminal leaflets which are narrowly ovate (not elliptic-ovate), 43-70×19-31 mm (not 35-45×25-30 mm), the wing petals are ciliate (not glabrous), the indumentum of the stem and leaves is subsericeous (not short pubescence-tomentose), the stipules are 6-11 mm long (not 3-6 mm), the corolla is 18 mm (not 13-14 mm) long.