海原黄耆 hai yuan huang qi

Plants 15-20 cm tall. Stems of current year 11-13 cm, sparsely to loosely appressed white and black hairy. Leaves 2-3 cm; stipules 2.5-4 mm, high connate behind stem, lower one white hairy, upper ones predominantly black hairy; petiole ca. 0.5 cm, with rachis hairy like stem; leaflets in 7-10 pairs, ellip­tic, 3-5 × 1.5-3 mm, abaxially loosely to rather densely ap­pressed hairy, adaxially glabrous or sparsely hairy. Racemes 10-12-flowered; peduncle 3-5 cm, white and black hairy, toward raceme hairs predominantly black; bracts ca. 1.5 mm, predominantly black hairy. Calyx 4-5 mm, loosely appressed black hairy; teeth 1-2 mm. Petals violet; standard ovate, 9-10 × ca. 6 mm, apex widely emarginate; wings ca. 8 mm; keel 9-11 mm. Legumes (unripe) with a stipe ca. 4 mm, appressed white hairy.

● Ningxia.