Description from Flora of China
Jasminum pinfaense Gagnepain; Ophiorriza esquirolii H. Léveillé.
Vines woody, twining, to 3 m. Branchlets terete, striped, twisted, glabrous or puberulent. Leaves opposite, simple; petiole 0.5-1.7 cm, twisted, often pubescent; leaf blade narrowly lanceolate, 7.5-19 × 2-3.5(-4.5) cm, leathery, glabrous or sparsely pubescent abaxially, sometimes with glandular dots, base rounded or cuneate, apex acuminate; primary veins 4-10 on each side of midrib. Corymbs 3-9-flowered, dense, opposite or whorled, axillary or terminal, elongated in fruit into racemes or few-branched panicles; bracts linear, 2-5 mm. Pedicel 1-9 mm, pubescent or glabrous. Calyx sparsely pubescent or glabrous, shedding in fruit; lobes 5 or 6, setaceous-subulate, 5-10 mm. Corolla white, funnelform; tube 1-1.5 cm; lobes 5, ovate, 3-7 mm. Berry black, globose, 6-10 mm in diam. Fl. Apr-Jun, fr. Jun-Jul.
* Dense woods on slopes; 1000-1500 m. Guangxi, Guizhou