Shrubs, 0.3-3 m tall; branches terete to flattened, with internodes developed to shortened, glabrescent or usually densely puberulent to pilosulous, becoming gray to grayish white, with buds resinous and distalmost internodes often covered with resin. Leaves opposite or rarely ternate, subsessile to petiolate; petiole to 0.5(-1) cm, densely puberulent or shortly pilosulous to glabrous; blade drying thinly leathery to stiffly papery, oblong-lanceolate, obovate-oblong, obovate, oblanceolate, or elliptic, 3-25 × 1.5-8 cm, adaxially shiny and glabrous or sometimes puberulent on principal veins, abaxially puberulent or pilosulous to glabrous, base cuneate to acute, apex acute to acuminate or obtuse then abruptly long acuminate; secondary veins 8-15 pairs, in abaxial axils often with pilosulous domatia; stipules calyptrate, cylindrical, 4-13 mm, splitting for ca. 3/4 their length, densely puberulent to glabrous. Flower solitary, terminal; peduncle 1-10 mm, puberulent or pilosulous to glabrous. Calyx puberulent or pilosulous to glabrous; ovary portion obconic or obovoid, 5-8 mm, with (5 or)6(-8) weak to developed longitudinal ridges; limb with basal tubular portion 3-5 mm; lobes (5 or)6(-8), lanceolate or linear-lanceolate to spatulate, 10-30 × 1-4 mm, often strongly keeled, acute. Corolla white to pale yellow, simple or in cultivation sometimes doubled, outside glabrous; tube 30-50 × 4-6 mm, cylindrical, in throat pilose; lobes (5 or)6(-8) or numerous when doubled, obovate or obovate-oblong, 15-40 × 6-28 mm, obtuse to rounded. Fruiting peduncles apparently not much elongating. Berry yellow or orange-yellow, ovoid, subglobose, or ellipsoid, 1.5-7 × 1.2-2 cm, with 5-9 longitudinal ridges, with persistent calyx lobes to 40 × 6 mm; seeds suborbicular, weakly angled, ca. 3.5 × 3 mm. Fl. Mar-Jul, fr. May-Feb.
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A shrub. It grows 1-2 m high. The leaves are opposite. They are simple and oval. They are thick and glossy. They are 10 cm long by 5-7 cm wide. The flowers are single and in the axils of leaves. They are 7-8 cm across. They have many petals. These are white. The flowers have a sweet smell. The fruit is oval and fleshy. There are many seeds inside.
Thickets and forests at stream sides, on mountain slopes, on hills, or in valleys and fields at elevations of 10-1,500 metres.
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A tropical plant. It suits hardiness zones 10-11. In XTBG Yunnan.
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