Description from Flora of China
Shrubs 1--2 m tall; young branchlets, leaves abaxially, petioles, and inflorescences densely stellate tomentose. Branchlets terete or subterete. Petiole 0.5--1.5 cm; leaf blade oblong or narrowly so, 12--24 X 3--6 cm, adaxially stellate tomentose but glabrescent and bullate to rugose with age, base cuneate to decurrent, margin serrate to crenate, apex acuminate, lateral veins 10--12 pairs. Inflorescences terminal, a panicle composed of several interrupted spikelike thyrsi, 8--20 X 3--11 cm. Calyx campanulate, ca. 3 mm, outside densely stellate tomentose and with some glandular hairs, inside glabrous; lobes triangular, ca. 1.7 mm. Corolla violet, ca. 6 mm; tube ca. 4.8 mm, outside stellate-tomentose, inside pilose above middle; lobes suborbicular, ca. 1.2 X 1.2 mm, inside glabrous. Stamens inserted at middle of corolla tube; anthers sessile, oblong, ca. 1.2 mm. Ovary ovoid to conical, ca. 2.2 X 1.5 mm, stellate tomentose except for glabrous base; stigma clavate. Capsules ellipsoid, ca. 6 X 2 mm, stellate tomentose and with glandular hairs. Seeds spindle-shaped, winged at both ends. Fl. Apr-Oct.
Forest edges, thickets on mountains, riverbanks; 1000--2500 m. S Sichuan, SE Xizang, Yunnan [NE India].