糙荚棘豆 cao jia ji dou

Phaca muricata Pallas, Reise Russ. Reich. 3: 746. 1776; Astragalus muricata (Pallas) Pallas.

Herbs, 5-12 cm tall, acaulescent, from a multiheaded cau­dex. Stipules with a lanceolate-subulate free part, densely yel­lowish villous with appressed long trichomes, glandular, adnate to petioles nearly to middle. Leaves 5-12(-20) cm; rachis with sparse trichomes and yellow glands; leaflets verticillate, in 15-18(-25) whorls, ca. 4 blades per whorl or rarely 2 and opposite; leaflet blades linear, lanceolate, or oblong, 4-6 × 1-2 mm, both surfaces with yellow glands, adaxially with appressed white trichomes, base rounded, apex acute. Racemes elongate, lax, several to many flowered; peduncle as long as or shorter than leaves, with appressed long trichomes and glands; bracts broadly lanceolate, ca. 10 × 3 mm, with appressed dense yellow glands, apex acute. Calyx cylindric, 0.9-1.1 cm, with brown tri­chomes and pale yellow glands; lobes triangular, 2-3 × ca. 0.5 mm. Corolla pale to dirty yellow; standard 2.2-2.5 × ca. 0.7 cm, lamina elliptic-lanceolate, apex shortly acuminate; wings 1.7-2 × ca. 0.3 cm, lamina obovate, apex rounded; keel as long as wings, beak ca. 1 mm. Legume tapering cylindric, 2-2.5 × 0.4-0.6 cm, leathery, ± 2-locular, glabrous and glandular, beak ca. 3 mm. Fl. Jun, fr. Jul. 2n = 32.

Hillsides. Ningxia [N Mongolia, Russia (Siberia)].