Shrubs 2-3(-5) m tall. Branchlets 4-angled, nodes with a transverse scar. Petiole slender, 0.5-1.5 mm; leaf blade narrowly lanceolate to oblong-elliptic, 8-20 X 2-6 cm, adaxially glabrous, base cuneate to narrowly cuneate, margin serrate, apex caudate-acuminate to cuneate, midvein and lateral veins abaxially very prominent. Cymes 2-3 cm across; peduncle slender, 0.5-1.5 cm. Calyx cup-shaped, ca. 1 mm, truncate to minutely 4-dentate, gray puberulent. Corolla pale purple, ca. 2 mm, slightly puberulent. Stamens 2-3 X as long as corolla; anthers ovate, ca. 1 mm. Ovary puberulent. Fruit ca. 1.5 mm in diam., stellate pubescent. Fl. May-Aug, fr. Aug-Dec.

800-1700 m. Guangdong, Guangxi, Guizhou, Hainan, Sichuan, Taiwan, Yunnan [India, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Thailand, Vietnam]