蟹钳叶羊蹄甲 xie qian ye yang ti jia

Lianas, with tendrils. Young branches brownish puberu­lent, later glabrous; tendrils pubescent when young. Leaves 2-foliolate or shortly united; petiole 3-6 cm, rusty or brownish pubescent; leaf blade adaxially shiny, 5-10 × 2.5-5 cm, papery, abaxially pubescent on veins, or almost glabrous, adaxially glabrous, smooth, veins 4 or 5 per lobe, base cordate; lobes sub­oblong to sublanceolate, acuminate. Inflorescence racemose-corymbose, terminal or lateral, axis rusty pubescent; bracts and bracteoles lanceolate. Pedicel ca. 1 cm, pubescent. Flowers fra­grant. Receptacle cylindric, ca. 5 mm; calyx lobes reflexed at anthesis, oblong-elliptic, ca. 10 mm, outside pubescent, inside glabrous, acuminate. Petals white, obovate to oblong-obovate, ca. 18 mm. Fertile stamens 3; filaments ca. 12 mm, pubescent near base, glabrous above; anthers oblong, ca. 5 mm. Ovary shortly stalked, ca. 8 mm, densely rusty tomentose; style ca. 15 mm, slender, glabrous except at base; stigma peltate. Leg­ume unknown.

Thickets in open habitats. Guangxi, Yunnan [N Vietnam].