Description from Flora of China
Bauhinia acuminata Linnaeus var. hirsuta (Weinmann) Craib.
Shrubs, to 3 m tall. Young branches brownish pubescent or hirsute. Stipules linear or spinelike, ca. 1 cm; petiole 2-5 cm, ridged; leaf blade broadly ovate or cordate, 6-11(-16) × 6-11 cm, subleathery, abaxially pubescent, adaxially glabrous, primary veins 9, base shallowly cordate, apex bifid to 1/4, lobes obtuse at apex. Inflorescence a short raceme, few (2-5) flowered, axillary or terminal; bracts and bracteoles linear, 3-6 mm, pubescent. Flower buds narrowly fusiform, pubescent, acuminate at apex, tapering into 5 linear, pubescent teeth 2-5 mm. Hypanthium tubular. Calyx spathe open on one side. Petals white, ovate-oblong, 3-3.5 × ca. 1.5 cm, subsessile. Fertile stamens 10 in 2 whorls, subequal, to 2 cm, pubescent at base; anthers yellow, oblong. Ovary stalked, pubescent only near base and on margin; style to 2 cm, glabrous; stigma peltate, small. Legume straight or slightly curved, linear-oblanceolate, 6-9 × ca. 1.5 cm, compressed, beaked; valves leathery, glabrous, without ridges on suture. Seeds 3-10, compressed, ca. 8 mm in diam. Fl. Apr, fr. Jun-Aug.
Yunnan [from SE Asia and Peninsular Malaysia to Indonesia (Java)].