Study of the genus Astragalus L. in Lordegan area

This research is related to the study of diversity and distribution of the genus Astragalus (Fabaceae) in the county of Lordegan (Chaharmahal and Bakhtiari province). The county of Lordegan has an area of about ۳۴۲۰ km۲ and is located in the south of Chaharmahal and Bakhtiari province, with moderate and semi-arid climate. Plant samples were collected from March ۲۰۱۷ to August ۲۰۱۸ for this study. Prior to this study, ۱۲ taxa were reported in the Lordegan County, here, with ۱۷ new taxa for the Lordegan, number of taxa increased to ۲۹ in this county. These ۲۹ taxa belonging into ۱۲ sections. Among them, section Caprini DC. with ۷ spp. is the largest section in the county followed by section Malacothrix Bunge with ۴ spp. Only A. ahmad-parsai Maassoumi and A. chamanbidensis Maassoumi & Mozaf. are endemic to the Lordegan, ۸ taxa have global distribution pattern, and other taxa are endemic to Iran. In terms of life forms, Hemicripptophytes with ۴۸% were the most common life form in the county, followed by Camphytes with ۴۵%, Phanerophytes with ۳.۵%, and Trophytes with ۳.۵%.

کلیدواژه ها:

taxonomy ، Legumes ، Zagros ، endemic species ، Chaharmahal and Bakhtiari province