Description from Flora of China
Jasminum gardeniiflorum L. C. Chia.
Shrubs scandent, ca. 5 m, glabrous. Branchlets terete or compressed. Leaves opposite, simple; petiole 0.8-2.5 cm, articulate at middle; leaf blade ovate, elliptic, to lanceolate, 5.5-19 × 3-8.5 cm, leathery, base rounded or broadly cuneate, apex acuminate to caudate-acuminate; primary veins 7-11 on each side of midrib, slightly raised, at 50-60° to midrib. Flowers solitary, or in 2-6-flowered racemes, terminal or axillary; bracts linear, 5-11 mm. Pedicel 0.4-1.8 cm, thickened upward. Calyx glabrous; tube cylindric, 2.8-4 mm; lobes 6-8, linear, 0.5-1.8 cm, enlarged to 2-3 cm in fruit. Corolla white, pink outside; tube 2-3 cm; lobes 7-8, narrowly lanceolate, 2-2.5 cm. Berry purple, ellipsoid, 1.7-2 × 1.1-1.8 cm. Fl. Apr, fr. Jun.
Thickets, forests; 200-600 m. S Guangxi, SE Yunnan [Vietnam]