Schistocodon meyenii Schauer; Secamone wightiana (Hooker & Arnott) K. Schumann; Toxocarpus ovalifolius Tsiang.

Lianas slender, to 8 m. Branchlets tawny brown puberulent, lenticellate. Petiole 1-1.5 cm, rusty tomentose; leaf blade elliptic or elliptic-oblong to ovate-orbicular, 2.5-6 × 1.5-4.5 cm, subleathery, glabrous, base rounded to subcordate, apex acute to rounded or subemarginate, apiculate to cuspidate; lateral veins 5-8 pairs. Cymes umbel-like, to 10-flowered, much shorter than leaves; peduncle to ca. 6 mm, rusty pubescent. Pedicel ca. 3 mm, minutely villous. Sepals ovate-oblong, membranous, rusty tomentose. Corolla yellow-ish, rotate, glabrous; tube ca. 2 × 3 mm; lobes narrowly lanceolate, ca. 8 × 1-2 mm. Corona lobes triangular, ca. 2 mm, obtuse. Pollinia minute. Stigma head fusiform. Follicles narrowly lanceolate in outline, 8-9 × ca. 1 cm, divaricate at 180-200º, densely rusty tomentose, pericarp thick. Seeds ovate-oblong, ca. 10 × 3-5 mm, not beaked; coma ca. 3 cm. Fl. Jun-Aug, fr. Oct-Dec.

All parts are used externally for the treatment of traumatic injury and boils.

Open forests, bushland; 100-600 m. Guangdong, Guangxi, Guizhou, Hainan, Yunnan [India, Vietnam]