Description from Flora of China
Myxopyrum hainanense L. C. Chia.
Shrubs scandent. Branchlets narrowly winged, glabrous. Petiole 0.5-1.5 cm, canaliculate above; leaf blade elliptic or elliptic-lanceolate, 10-18 × 4.5-7.5 cm, leathery, glabrous, dotted with peltate scales, base broadly cuneate to somewhat rounded, slightly oblique, margin entire or sometimes serrate, apex acuminate to acute or obtuse; veins raised. Panicles axillary, 4.5-6.5 cm, minutely papillose hairy. Flowers subsessile. Calyx 0.6-0.8 mm, minutely papillose hairy; lobes deltate, ca. 0.4 mm. Corolla urceolate, constricted at throat; tube ca. 1 mm; lobes elliptic, ca. 0.5 mm, obtuse. Anthers subglobose, ca. 0.5 mm in diam. Berry subglobose or obovoid, 0.8-2 cm in diam., papillose. Fl. Aug-Oct, fr. Sep-Apr. 2n = 22*.
Under shade of woods; below 1300 m. Hainan [Laos, Thailand, Vietnam]