Description from Flora of China
Shrubs ca. 2 m tall. Branchlets of previous year dark purple, angular, glabrous, those of current year densely villous. Petiole 8-10 mm; leaf blade ovate, 4-6 × 2-3.5 cm, membranous, abaxially villous along veins, adaxially sparsely strigose, veins ca. 5, slightly basifugal, base rounded or subcordate, margin serrate, apex acuminate. Racemes 3-6 cm, 3-19-flowered, lowest 2 or 3 pairs 2- or 3-flowered; rachis densely villous; lowest pedicel 5-8 mm, distal ones shorter. Calyx tube strigose; lobes oblong-lanceolate, 4-5 × 1.5-2 mm, apex caudate, tail 2-3 mm. Corolla discoid; petals oblong or elliptic-ovate, 1-1.2 × 5-7 mm. Stamens 28-31, longest ones ca. 7 mm; anthers subglobose or ovoid-oblong, 1-1.5 mm. Disc glabrous. Style ca. 7 mm, glabrous or sparsely villous at base; stigmas clavate, 1.5-2 mm. Capsule unknown. Fl. Jun-Aug.
* Thickets; ca. 1900 m. Yunnan.