锈毛槐 xiu mao huai

Millettia esquirolii H. Léveillé; Sophora duclouxii Gagne­pain; S. mairei Pampanini; S. prazeri subsp. mairei (Pampanini) Yakovlev; S. prazeri var. mairei (Pampanini) P. C. Tsoong.

Shrubs, 1-3 m high. Branches brown; branchlets red-brown tomentose. Leaves 7-11 × 3-4 cm; stipules setaceous, hairy; petiole sulcate adaxially; leaflets 7-15, usually ovate-elliptic, ovate, or long elliptic, rigidly papery; terminal leaf­let ca. 8 × 4 cm, base cuneate to broadly cuneate, apex acute to broadly acute; middle leaflets oblong-lanceolate or ovate, 3-5 × 2-3.5 cm; basal leaflets smaller, veinlets obvious on both surfaces, densely hairy abaxially, lustrous adaxially. Racemes lateral, alternate with leaves, 5-20 cm. Pedicel 3-6 mm; bracts setaceous, caducous. Calyx obliquely campanulate; teeth 5, 8-9 × 5-7.5 mm, hairy. Corolla white or pale yellow; standard obo­vate or oblong-obovate, 15-17 × ca. 5 mm, apex retuse, nar­rowing to claw from middle; wings oblong, equal to standard in length, 1-auriculate, claw slender; keel shorter, obovate-oblong, 1-auriculate. Stamens 10, slightly fused at base. Ovary densely red-brown hairy. Legumes moniliform, 4-10 cm, apex beaked, neck densely hairy, constricted between seeds. Seeds 2-4, dark red or light red, ovoid or elliptic, ca. 8 mm, both ends acute. Fl. and fr. Apr-Sep.

Mountain forests, valleys, wet slopes; below 2000 m. Guangxi, Guizhou, Yunnan [Myanmar].