32. Desmodium sequax Wallich, Pl. Asiat. Rar. 2: 46. 1831.
长波叶山蚂蝗 chang bo ye shan ma huang
Desmodium dasylobum Miquel; D. hamulatum Franchet; D. sequax var. sinuatum (Miquel) Hosokawa; D. sinuatum (Miquel) Blume ex Baker; D. strangulatum Wight & Arnott var. sinuatum Miquel; Meibomia sinuata (Miquel) Kuntze.
Shrubs, erect, 1-2 m tall, much branched. Young branches rust-colored pubescent, sometimes intermixed with minute hooked hairs. Leaves 3-foliolate; petiole 2-3.5 cm, hairy as young branches; terminal leaflet blade ovate-elliptic or orbicular-rhombic, 4-10 × 4-6 cm, abaxially adpressed pubescent and intermixed with minute hooked hairs, adaxially densely puberulent or glabrescent, base cuneate to obtuse, margin undulate above middle, apex acute. Racemes terminal and axillary or usually terminal panicles, to 12 cm; rachis densely spreading or upward hirsute or minutely tomentose, 2-flowered at each node. Pedicel 3-5 mm, slightly elongated at fruiting. Calyx ca. 3 mm; lobes ca. as long as tube. Corolla purple, ca. 8 mm; standard elliptic to broadly elliptic; wings narrowly elliptic, auriculate, clawed; keel long clawed. Stamens monadelphous. Legume moniliform, 3-4.5 × ca. 0.3 cm, with dense rust-colored or brown minute hooked hairs, both sutures constricted, 6-10-jointed; articles nearly quadrate. Fl. Jul-Sep, fr. Sep-Nov. 2n = 22.
Grassy slopes, forest margins; 1000-2800 m. NW Guangdong, Guangxi, Guizhou, Hubei, Hunan, ?Jiangsu, Sichuan, Taiwan, Xizang, Yunnan [Bhutan, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, New Guinea, Philippines, Thailand, Vietnam].