黄花合叶豆 huang hua he ye dou

Smithia blanda var. paniculata (Arnott) Baker; S. blanda var. racemosa (Wight & Arnott) Baker; S. bodinieri H. Léveillé; S. paniculata Arnott; S. racemosa Wight & Arnott; S. yun­nanensis Franchet.

Shrublets, 40-60 cm tall. Stems densely golden setose. Stipules lanceolate, villous. Leaves 4-10-foliolate; petiolules less than 1 mm; leaflet blades oblong to obovate-lanceolate, 6-12 × 2.5-3 mm, papery, midvein setose, base oblique, margin setose, apex obtuse to rounded and with a spinelike mucro. In­florescences axillary, scorpioid cymes, with flowers usually clustered at apical part; peduncle 1.5-4 cm, setose; bracts ovate-orbicular. Flowers ca. 1 cm. Pedicel 1-3 mm; bracteoles suborbicular, 2.5-3.5 mm, membranous. Corolla yellow; stan­dard orbicular, with short claw, base acuminate, apex cuneate to slightly emarginate; wings smaller than standard, with an auri­cle; keels ± as long as wings, with an auricle. Stamens diadel­phous. Ovary with trichomes; style filiform; stigma terminal. Legume a plicate loment, 2.5-3 mm wide, shortly stipitate, divided into 5 or 6 articles; articles with reticulate veins. Seeds not seen. Fl. Aug-Sep, fr. Sep-Oct.

Mountains, plains; 1000-2100 m. Guizhou, SW Sichuan, Yunnan [India, Laos, Sri Lanka, Thailand].