Shrubs 1-2 m tall. Branches robust, densely villous. Petiole 1-4.5 cm, densely villous; leaf blade broadly ovate, 3-8 × 2-5.5 cm, glandular, villous adaxially, densely so mainly along veins abaxially, base cordate, margin double crenate-serrate, apex short acuminate. Cymes densely villous, usually 3-flowered; peduncle 0.5-1.5 cm; bracteoles ± linear, 5-8 mm, densely villous. Pedicel 3-5 mm. Calyx tubular-campanulate, 1.2-1.4 cm in flower, 1.5-2.5 cm in fruit, densely pubescent outside, glabrous except for pubescent teeth inside; teeth 5, triangular to narrowly triangular, apex mucronate-acuminate. Corolla rose to purple-red, 3-4 × 0.8-1.2 cm, densely pubescent outside, glabrous inside; upper lip ca. 3 × 7 mm, subentire; middle lobe of lower lip ca. 6 × 10 mm, subentire, lateral lobes ca. 3 × 5 mm. Filaments puberulent. Style subequally 2-cleft. Nutlets brown, oblong, ca. 11 × 4 mm, winged at apex, finely striate. Fl. Sep-Oct, fr. Nov-Dec.
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