囊萼棘豆 nang e ji dou

Herbs, 10-15 cm tall, acaulescent, from a multiheaded caudex. Stipules narrowly triangular, ca. 1.5 cm × 2 mm, scari­ous, with long stout trichomes, basally connate. Leaves 1.5-8 cm, 7-17-foliolate; leaflet blades lanceolate, lanceolate-ovate, ovate, or elliptic, 3-20 × 1-2 mm, with appressed dense stout trichomes. Racemes dense, 3-10-flowered; peduncle 6-12 cm; bracts triangular, 4-5 × ca. 2 mm, with long stout trichomes. Calyx cylindric, becoming somewhat inflated, ca. 10 × 3 mm, with dense long stout trichomes; lobes subulate, 3-5 × ca. 0.5 mm, to 1/2 as long as tube. Corolla bluish violet; standard 1.8-2 cm, lamina spatulate, apex rounded to slightly emarginate; wings 1.5-1.7 cm, lamina obovate; keel ca. 1.4 cm, beak ca. 1.5 mm. Legume sessile, ovoid, 7-8 × ca. 4 mm, enveloped by calyx after anthesis, with dense whitish stout trichomes. Fl. Sep, fr. Sep.

● Sand dunes on slopes. Nei Mongol (Ulanqab Meng).