Description from Flora of China
Jasminum seguinii var. latilobum Handel-Mazzetti; J. taliense W. W. Smith.
Vines woody, twining, 1-7 m. Branchlets terete or flat, glabrous. Leaves opposite, simple; petiole 4-12 mm, articulate at middle; leaf blade ovate to narrowly elliptic, rarely lanceolate, 4-10(-14) × 1.5-4(-6.5) cm, leathery, glabrous except for tufted hairs in vein axils abaxially, base cuneate or rounded, apex acute, acuminate, or cuspidate; primary veins 4-7 on each side of midrib, slightly raised. Cymes racemose or paniculate, terminal or axillary, spreading; bracts subulate or lanceolate, 2-10 mm, smaller in size upward. Flowers heterostylous. Pedicel 0-2.2 cm, slightly thickened upward, glabrous. Calyx cupular, glabrous; lobes 4, deltate, rarely broadly linear, 0.5-1(-3) mm. Corolla white, salverform; tube slender, 1-2 cm; lobes 6-8, narrowly lanceolate, 0.8-1.7 cm. Berry black, subglobose, 0.5-1.5 cm in diam. Fl. May-Oct, fr. Aug-Apr.
Grasslands on slopes, along streams, in thickets or woods; below 2700 m. Guangxi, Guizhou, Hainan, Sichuan, Yunnan [Thailand]