Astragalus boldajiensis and Astragalus centro-zagrosicus (Fabaceae), two new species from west of Iran

In recent studies on Astragalus specimens at the herbarium of Chaharmahal and Bakhtiari Agricultural and Natural Resources Research and Education Center (D), two new species have been identified: A. boldajiensis (sect. Microphysa) and A. centro-zagrosicus (sect. Anthylloidei). These species are only found in the Chaharmahal and Bakhtiari province and are considered local endemics. A. boldajiensis is closely related to A. cephalanthus, but can be distinguished by its remotely flowered cylindric raceme, 12 mm long standard, 4 long and 2 mm wide calyx, and obtuse leaflets. On the other hand, A. centro–zagrosicus is similar to A. melanogramma, but can be differentiated by its yellowish flowers and distinct enervate calyx. Illustrations of the new species, diagnostic characters, and distribution map are provided. Also, the conservation status of these species has been assessed.