Astragalus nigricans Accepted Name Astragalus nigricans Barneby, Feddes Repert. 82: 579. 1971. Synonyms Astragalus nigrescens Popov, Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk SSSR 10: 21. 1947. Astragalus oligophyllus var. nigrocalycinus Sirj. & Rech.f., Biol. Skr. 9(3): 171. 1958. Regional Endemic Distribution Pattern SW Asia ( Iran / Afghanistan ) USSR { Central Asia ( Turkmenistan ) } Local Endemic Chromosome Number Note Admin2020-01-04T17:59:01+00:00