藏豆 zang dou

Stracheya tibetica Bentham, Hooker’s J. Bot. Kew Gard. Misc. 5: 307. 1853; Astragalus toktjenensis Ulbrich.

Herbs, perennial, 4-5 cm tall. Stems abbreviated, incon­spicuous. Stipules brown, ovate, 7-10 mm, membranous, api­cally connate. Leaves 4-7 cm, 11-15-foliolate; leaflet blades long ovate to elliptic, 8-10 × 3-5 mm, abaxially appressed pubescent, adaxially glabrous. Racemes corymbose, with 3-6 flowers; bracts ovate, ca. 2 × as long as pedicel; peduncle as long as to shorter than leaves. Pedicel 1-2 mm; bracteoles 2, small. Calyx obliquely campanulate, 7-8 mm, pilose; teeth lan­ceolate, as long as to slightly longer than tube. Corolla reddish; standard obovate, 1.5-1.8 cm; wings slightly shorter than stan­dard; keel ± as long as standard. Ovary glabrous, sessile; ovules 2-5. Legume long obovoid, inconspicuously septate into 2-5 segments, 1.5-2.5 cm, slightly inflated, banded, pubescent, with 1-1.5 mm prickles along margin and lateral midline. Fl. Jul-Aug, fr. Aug-Sep.

Alpine meadows; 4000-4600 m. SW Qinghai, Xizang [India (Sik­kim), Kashmir, Nepal, N Pakistan].