Astragalus campylorrhynchus Fisch. & Mey. in Ind.Sem.Hort. Petropol. 1:23. 1835. Boissier, Fl.Or.2:233.1872; Gontscharov & Popov in Komarov, Fl. U.R.S.S. 12:290.1946; Ali in Biologia 7:31.1961; Chamberlain & Matthews in Davis, Fl.Turk.3:65.1969.
Annual herb, erect or decumbent, up to 30 cm tall, commonly branched from the base, stems appressed hairy. Leaf imparipinnately compound, c. 3-10 cm long, petiole and rachis sparsely pubescent, hairs white. Leaflets 9-15, c. 5-10(-15) mm long, linear to narrowly obovate, entire, retuse, glabrous above, sparsely appressed pubescent below; stipules c. 2-4 mm long, triangular-lanceolate. Inflorescence a 1-4-flowered spike, peduncle shorter than or equal to leaves. Bracts c.0.5-1 mm long, sparsely white-ciliate. Calyx c. 3-5 mm long, pubescent, hairs white, appressed, teeth c. 1 mm long. Corolla violet. Vexillum c. 6-9 mm long. Wing c. 6-7.5 mm long. Keel c. 5-7 mm long. Fruit c. 3.0-4.5 cm long, c. 3 mm broad, nearly straight, linear, minutely white adpressed hairy, beak curved at the end into a hook, bilocular.
Holotype: Province Azerbaijan, Persia, Szovits (LE-not seen).
Distribution: Persia; Afghanistan; Russia: South Transcaucasia, Pamir Alai, Tien Shan, Mountain Turkmenia, Syr Darya foothills, Aralo Caspia and Kyzyl Kum (Gontscharov & Popov, l.c.); Pakistan, (Baluchistan, N.W.F. Province).