目前为止，中国西南野生生物种质资源库共保藏该物种: 种子27份; DNA材料82份; DNA5份;

• 科:豆科    Fabaceae
• 属:羊蹄甲属   Bauhinia
• 种:鞍叶羊蹄甲   Bauhinia brachycarpa

7. Bauhinia brachycarpa Wallich ex Bentham in Miquel, Pl. Jungh. 261. 1852. 鞍叶羊蹄甲 an ye yang ti jia Bauhinia altefissa H. Léveillé, p.p.; B. bonatiana Pam­panini; B. brachycarpa var. cavaleriei (H. Léveillé) T. C. Chen; B. brachycarpa var. densiflora (Franchet) K. Larsen & S. S. Larsen; B. brachycarpa var. microphylla (Oliver ex Craib) K. Larsen & S. S. Larsen; B. cavaleriei H. Léveillé; B. densiflora Franchet; B. enigmatica Prain; B. faberi Oliver; B. faberi var. megaphylla Tang & Wang; B. faberi var. microphylla Oliver ex Craib.Shrubs, erect or spreading, or small trees, to 5 m tall, dioecious or androdioecious. Branches slender, puberulent when young, glabrous later. Stipules caducous, linear; petiole 1-6 cm; leaf blade suborbicular, 0.8-12 × 1-10 cm, papery or mem­branous, abaxially puberulent, adaxially glabrous or puberulent, primary veins 5-13, base truncate or shallowly cordate, apex bifid to ca. 1/2, lobes rounded at apex. Inflorescence a raceme, to 50-flowered, sometimes much condensed, terminal; bracts caducous, linear. Flower buds ellipsoid, puberulent. Hypan­thium turbinate, short. Calyx open as a spathe into 2 lobes. Petals white, obovate to oblanceolate, 7-8 mm, shortly clawed. Male flowers: fertile stamens 10 in 2 whorls; filaments 5-6 mm; reduced ovary small. Female flowers: reduced stamens 10; ovary hairy, shortly stalked; style stout; stigma peltate. Legume elliptic to oblanceolate, compressed, leathery, puberulent or nearly glabrous, dehiscent. Seeds 2-7, suborbicular, com­pressed. Fl. May-Jul, fr. Aug-Oct.Open forests, dry mountain slopes; sea level to 3200 m. Chong­qing, Gansu, Guangxi, Guizhou, Hubei, Shaanxi, Sichuan, Xizang, Yun­nan [Laos, Myanmar, Thailand].This is a polymorphic species, widely distributed in W China from Xishuangbanna in the south to Gansu in the north. At lower elevations and latitudes, as a small tree in open forests, its leaves can be much larger, but in habitats at higher elevations and latitudes, especially on slopes in dry river valleys, it is a small shrub no more than 30 cm tall, with leaves not exceeding 1 cm in diam.【引自：Flora of China】

直立或攀援小灌木；小枝纤细，具棱，被微柔毛，很快变秃净。叶纸质或膜质，近圆形，通常宽度大于长度，长3-6厘米，宽4-7厘米，基部近截形、阔圆形或有时浅心形，先端2裂达中部，罅口狭，裂片先端圆钝，上面无毛，下面略被稀疏的微柔毛，多少具松脂质丁字毛；基出脉7-9(-11)条；托叶丝状早落；叶柄纤细，长6-16毫米，具沟，略被微柔毛。伞房式总状花序侧生，连总花梗长1.5-3厘米，有密集的花十余朵；总花梗短，与花梗同被短柔毛；苞片线形，锥尖，早落；花蕾椭圆形，多少被柔毛；花托陀螺形；萼佛焰状，裂片2；花瓣白色，倒披针形，连瓣柄长7-8毫米，具羽状脉；能育雄蕊通常10枚，其中5枚较长，花丝长5-6毫米，无毛；子房被茸毛，具短的子房柄，柱头盾状。荚果长圆形，扁平，长5-7.5厘米，宽9-12毫米，两端渐狭，中部两荚缝近平行，先端具短喙，成熟时开裂，果瓣革质，初时被短柔毛，渐变无毛，平滑，开裂后扭曲；种子2-4颗，卵形，略扁平，褐色，有光泽。花期5-7月；果期8-10月。【引自：中国植物志】