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].