Description from Flora of China
Shrubs or small trees, 1.5-6 m tall, evergreen. Branchlets brown, terete, with dotted or linear lenticels, glabrous, densely scurfy glandular. Petiole 2-4 cm, densely glandular; leaf blade oblong, lanceolate, or rarely elliptic, 9-16 X 3.5-8 cm, leathery, adaxially glabrous and dark brown when dry, both surfaces dark yellow glandular, base cuneate to decurrent, margin entire or repand, apex acute to acuminate; veins 6 or 7 pairs, abaxially elevated. Panicles large and lax, ca. 20 cm, branches trichotomous; peduncle 1-3.5 cm; bracts 3-6(-12) mm. Calyx 4-5 mm, papery, nearly 2-lipped, lower lip 3-dentate, upper lip 2-dentate, both surfaces glabrous and glandular. Corolla yellow or white, ca. 8 mm, outside glabrous and densely glandular, densely villous in throat, 2-lipped; lower lip 3-lobed, ciliate; upper lip entire or emarginate. Filaments glabrous, slightly exserted; anthers dark brown. Ovary obovate, glabrous, apically glandular. Fruit purple-red, ca. 3 mm in diam., slightly tubercular, glandular.
* Mixed forests; ca. 600 m. W Guangxi, SE Yunnan.