Description from Flora of China
Hedysarum umbellatum Linnaeus, Sp. Pl. 2: 747. 1753; Desmodium umbellatum (Linnaeus) Candolle.
Dwarf shrubs to shrubs or small trees, to 3 m tall. Young shoots terete, densely appressed sericeous. Leaves 3-foliolate; petiole 2-5 cm; terminal leaflet blade elliptic or ovate to orbicular or broadly ovate, 5-14(-17) × 3-7(-8.5) cm, lateral leaflets slightly smaller, abaxially appressed long hairy, adaxially glabrescent, lateral veins 7-12 on each side of midvein, reaching margin. Umbels often 10-20-flowered. Pedicel 3-7 mm at anthesis, 5-12 mm in fruit. Calyx 4-5 mm, upper lobe 2-toothed at apex. Corolla white; standard broadly obovate or elliptic, 1-1.3 cm × 6-10 mm, clawed; wings narrowly elliptic, 1.1-1.2 cm × 1-2 mm, clawed; keel broader than wings, 1.1-1.2 cm × 3-5 mm, clawed. Stamens ca. 1 cm. Pistil to 1.5 cm; ovary sericeous; style ca. 1.2 cm, glabrous. Legume narrowly oblong, 2-3.5 × 0.4-0.6 cm, (3-)8-jointed; articles broadly elliptic or oblong. Seed elliptic or broadly elliptic, ca. 4 × 3 mm. Fl. Aug-Oct, fr. Nov-Mar.
Seashores. S Taiwan [Cambodia, India, Indonesia, S Japan (Ryukyu Islands), Malaysia, Myanmar, Sri Lanka, Thailand, Vietnam; Africa, Australia, Pacific islands].