Masoud Ranjbar - Department of Biology, Herbarium division, University of Bu-Ali Sina, P.O.Box ۶۵۱۷۵/۴۱۱۱, Hamadan, Iran
Aliasghar Maassoumi - Research Institute of Forests and Rangelands, P.O. Box ۱۳۱۸۵-۱۱۶, Tehran, Iran
Roya Karamian - Department of Biology, Herbarium division, University of Bu-Ali Sina, P.O.Box ۶۵۱۷۵/۴۱۱۱, Hamadan, Iran

Astragalus borujenensis Ranjbar & Maassoumi (Fabaceae) is described from Iran and illustrated in line drawings. It belongs in Astragalus sect. Ammodendron and resembles A. podolobus, from which it differs mainly in its stipe, color and type of pod indumentum and pod arrangement. Seed coat surfaces of A. borujenensis and A. podolobus are displayed in SEM photographs. Also A. filifoliolatus is transferred from A. sect. Onobrychoidei to A. sect. Ammodendron.

Astragalus sect. Ammodendron, new species, Iran, Taxonomy