Herbs prostrate to suberect. Stems densely gray hirsute. Petiole 1-1.5 cm; leaf blade elliptic to ovate, 5-9 × 2.5-4 cm, base narrowly cuneate, margin remotely serrate, apex obtuse, gray hirsute. Cymes 4- or 5-flowered, 1.5-2.5 cm including peduncle. Pedicel 0.8-1.5 cm. Calyx campanulate, 5-6 mm, teeth subequal. Corolla white, ca. 5 cm, glabrous; upper lip ca. 3.5 mm, apex obtuse; middle lobe of lower lip oblong, ca. 7 × 4 mm. Fl. and fr. Oct-Nov.

* Forests. Guangxi (Dayao Shan).