杜鹃黄耆 du juan huang qi

Plants 50-60 cm tall. Stem 1-3 mm in diam., hollow, sparsely to rather densely covered with ± spreading white hairs 0.5-1 mm and with appressed black hairs 0.3-0.4 mm, glabres­cent with age. Leaves 5-8 cm, subsessile; stipules 5-9 mm, free, sparsely hairy; rachis slender, loosely covered with subap­pressed to ascending, predominantly black hairs 0.1-0.3 mm; leaflets in 10-14 pairs, narrowly elliptic, 5-13 × 1-3.5 mm, abaxially loosely appressed hairy, adaxially glabrous, apex rounded. Racemes 4-6 cm, loosely many flowered; peduncle 6-8 cm, predominantly black hairy; bracts whitish, ca. 3 mm, black hairy. Calyx 4-5 mm, loosely to rather densely covered with subappressed black hairs 0.3-0.6 mm and sometimes also with a few white hairs; teeth slightly unequal, 1-1.5 mm. Pet­als ?cream, sometimes flushed with violet, all of nearly same length; standard elliptic, ca. 13 × 5 mm, with a slightly to dis­tinctly tonguelike emarginate tip. Legumes (immature) with a slender stipe ca. 5 mm, densely covered with ascending white and predominantly black hairs.

● About 4100 m. Xizang.