Description from Flora of China
Climbing shrubs, to 5 m tall; branches glabrous, terete, sparsely lenticellate. Leaves opposite; petiole 0.3-1.5 cm, glabrous; blade drying thickly papery, brown, ovate, oblanceolate, lanceolate, or oblong-elliptic, 5.5-14 × 2.4-6 cm, both surfaces glabrous or sparsely strigose on principal veins, base acute, cuneate, or occasionally obtuse, apex acute to acuminate; secondary veins 4-6 pairs, without domatia, tertiary venation only sparsely visible abaxially; stipules caducous exposing a fringe of persistent reddish brown trichomes, narrowly triangular, 3-8 mm, glabrous, deeply 2-parted, lobes acute to acuminate. Inflorescence compound-cymose to compound-corymbiform, 2-8 × 2-12 cm, congested when young becoming lax with age, glabrous, pedunculate or sessile and 3- or 5-partite; peduncles 1-2.5 cm; bracts triangular to linear-lanceolate, 1.5-7 mm, sparsely strigillose to glabrous; pedicels 1-5 mm. Flowers pedicellate, biology not noted. Calyx with hypanthium portion ellipsoid, 2.5-3.5 mm, glabrous; lobes linear-lanceolate to narrowly triangular, 2-4.5 mm, often unequal on an individual flower, strigillose or hispidulous, with 1 lobe on 1-6 flowers per inflorescence expanded into white calycophyll, blade broadly elliptic to ovate, 3.5-6.5 × 3-5 cm, glabrous except sparsely strigillose on principal veins, base cuneate, rounded, or truncate, stipe 9-20 mm, apex rounded to acute. Corolla yellow to orange-yellow, outside densely strigillose to strigose; tube 22-24 mm; lobes ovate, 4-5 mm, adaxially yellow papillose, rounded then abruptly shortly acuminate. Berry ellipsoid to subglobose, 10-13 × 8-10 mm, glabrous, smooth or sparsely lenticellate, calyx limb deciduous. Fl. Apr-Jul, fr. Sep-Dec.
Sparse evergreen forests, streamsides, along roads; 300-800 m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Sichuan, Taiwan, Yunnan [Japan (Ryukyu Islands), Vietnam].