耐旱膨果豆 nai han peng guo dou

Astragalus siccaneus P. C. Li, Acta Bot. Yunnan. 11: 291. 1989.

Plants 18-50 cm tall, with only white, short, ± appressed hairs up to 0.3 mm. Stem erect, sparsely to loosely covered with hairs 0.05-0.2 mm. Leaves 3-5 cm, subsessile; stipules 2-4 mm; rachis sparsely hairy; leaflets in 3-5 pairs, 4-7 × 2-4 mm, abaxially loosely hairy, adaxially glabrous. Racemes loosely 2- or 3-flowered; peduncle 3-9 cm, glabrous or sparsely hairy like stem; bracts 1.5-2 mm, sparsely hairy. Calyx 7-8 mm, loosely hairy; teeth 2-2.5 mm. Petals pink or purplish; standard trans­versely elliptic, ca. 10 × 10 mm; wings ca. 9 mm; keel ca. 8 mm. Legumes with a stipe ca. 3 mm, 25-30 mm, 4-5 mm high, with a beak 4-5 mm, 1-locular, loosely white hairy when young, soon glabrescent.

● Sichuan.