肾瓣棘豆 shen ban ji dou

Herbs, 3-7 cm tall, acaulescent, from a multiheaded cau­dex. Caudex branches clothed with marcescent stipules and leaf bases, with sparse white long trichomes. Stipules with an ovate-lanceolate distinct part, free from petiole, connate to middle. Leaves 3-4 cm, 9- or 11-foliolate; petiole and rachis with spreading white long trichomes; leaflet blades oblong to lan­ceolate-oblong, 4-7 × 1.5-2 mm, abaxially almost glabrous but midvein and margin with sparse long trichomes, adaxially densely appressed pubescent, apex acute. Racemes 5-7-flow­ered; peduncle as long as leaves, with spreading dense white long trichomes and basally with dense black and white long trichomes. Calyx cylindric, 8-10 mm, with appressed white and black long trichomes; lobes subulate, shorter than tube. Corolla blue; standard 1.1-1.3 cm, lamina orbicular-reniform, apex emarginate; wings 0.9-1.1 cm, lamina obovate-oblong, apex emarginate; keel slightly shorter than wings, beak subulate and ca. 1.5 mm. Legume stipitate; stipe ca. 2 mm; body cylindric, 10-12 × ca. 4 mm, with sparse white and black short trichomes. Fl. and fr. Jun-Aug.

● Grasslands on mountain slopes; 4300-4600 m. Xizang.