Shrubs. Stems terete, ± villous. Branches, leaf blades abaxially, petioles, pedicels, and calyces densely brown villous. Petiole 2-6.5 cm; leaf blade ovate to lanceolate-ovate, 6.5-18 × 2.5-8.5 cm, papery to membranous, adaxially sparsely puberulous when young but glabrescent, secondary veins 2 on each side of midvein, base cuneate to rounded, margin erose denticulate with each tooth having a terminal seta, apex acuminate. Inflorescences axillary, cymose, ca. 3-flowered; peduncle very short to nearly absent. Pedicel ca. 2 mm, glandular. Hypanthium funnelform, 3-4 mm. Calyx lobes linear, 3-4 mm. Petals 4, oblong, ca. 8 × 4 mm, inclined to one side, apex acuminate. Stamens 4; filaments ca. 4 mm; anthers lanceolate, ca. 5 mm, slightly curved; connective not inflated, not extended. Ovary inferior, ovoid, 4-celled, ± glandular. Fl. Jul, fr. unknown.

● Dense mixed forests, valleys, stream banks, moist places. Guangxi.