八宿棘豆 ba su ji dou

Herbs, 3-5 cm tall, acaulescent, from a multiheaded cau­dex, with densely imbricate thatch of marcescent petioles and stipules. Stipules herbaceous, densely sericeous, adnate below middle to petiole, otherwise distinct. Leaves 1.5-2.5 cm, 9- or 11-foliolate; petiole and rachis densely sericeous; leaflet blades oblong to ovate, 3-4 × 1.5-2 mm, both surfaces densely serice­ous. Racemes compact, 5-10-flowered; peduncle ca. 2 × as long as leaves, densely white sericeous. Calyx 4-6 mm, with appressed white and black trichomes; lobes lanceolate, 2-3 mm. Corolla largely purple; standard 8-10 mm, lamina purple with a white center and orbicular, apex rounded to slightly emarginate; wings 7-9 mm, lamina obovate-oblong, apex rounded to emarginate; keel shorter than wings, beak ca. 0.5 mm. Legume shortly stipitate; body oblong-cylindric when young, with appressed dense black short trichomes. Fl. Jun, fr. Jul-Aug.

● About 3900 m. Xizang.