毛柱膨果豆 mao zhu peng guo dou

Astragalus heydei Baker in J. D. Hooker, Fl. Brit. India 2: 118. 1876; A. hendersonii Baker; A. heydei var. hendersonii (Baker) H. Ohba, S. Akiyama & S. K. Wu.

Plants up to 12 cm tall, densely hairy. Stems in leafy part ca. 1 cm, sparsely to loosely covered with subappressed, flex­uous, tangled, white hairs 0.1-0.2 mm. Leaves 1-2.5 cm; stip­ules 1-2.5 mm, shortly connate behind stem and mostly also in front of petiole, sparsely to loosely white hairy; petiole 0.2-0.6 cm, like rachis loosely to rather densely covered with sub­appressed to spreading, white hairs 0.2-0.4 mm; leaflets in 3-7 pairs, 2-5(-7) × 1-4 mm, both surfaces densely to rather densely covered with subappressed to ascending, partly flexu­ous, tangled, white hairs 0.5-0.7 mm. Racemes (1 or)2-5-flow­ered; peduncle 1-4.5 cm, often curved, loosely hairy like stem in upper part; bracts 1.5-2 mm, hairy. Calyx 3-6 mm, densely to rather densely covered with ascending to spreading, flex­uous, white hairs 0.5-0.7 mm, with very short, appressed, black hairs mixed in; teeth 1.5-2(-3) mm. Petals pink to pale violet; standard orbicular to transversely elliptic, 9-12 × 9-13 mm; wings 9-11 mm; keel 8-10 mm. Legumes subsessile, 15-20 mm, 8-12 mm high, compressed laterally, 1-locular, rather densely, later loosely, covered with short, appressed to as­cending, white or black and white hairs.

3900-5800 m. Qinghai, Sichuan, Xinjiang, Xizang [India, Nepal].