侧序长柄山蚂蝗 ce xu chang bing shan ma huang

Desmodium laterale Schindler, Repert. Spec. Nov. Regni Veg. 22: 258. 1926; D. hainanense Isely; D. laxum Candolle subsp. laterale (Schindler) H. Ohashi; Podocarpium laxum (Candolle) Y. C. Yang & P. H. Huang var. laterale (Schindler) Y. C. Yang & P. H. Huang.

Herbs, erect, 30-70 cm tall. Stem woody at base. Leaves 3-foliolate, scattered along stem; stipules lanceolate, 5-7 mm; petiole 3-5 cm, pubescent; terminal leaflet blade ovate or lan­ceolate, 5-13 × 2-4 cm, both surfaces subglabrous or pubes­cent, base suborbicular, margin entire, apex acuminate or acute. Racemes terminal, or terminal and axillary, to 30 cm, some­times branched, laxly flowered, 2- or 3-flowered at each node. Pedicel 3-5 mm, elongated to 4-10 mm at fruiting. Calyx ca. 1 mm, glabrous or slightly pubescent; lobes shorter than tube. Co­rolla pink, 4-6 mm; standard elliptic, clawed; wings narrowly elliptic, auriculate and shortly clawed at base; keel obtuse, clawed, not auriculate. Legume 2- or 3-jointed; articles slightly broadly subobovate, 6-7 × ca. 4 mm or smaller, with hooked hairs; stipe 4-10 mm; fruiting pedicel 4-10 mm. Fl. and fr. Aug-Oct.

Broad-leaved forests; below 1400 m. Fujian, Guangdong, Guang­xi, Hainan, ?Jiangxi, Taiwan [S Japan].