Description from Flora of China
Herbs perennial. Stems erect or ascending, 20-25 cm tall, terete, simple, scabrid villous. Leaves opposite or in whorls of 3; petiole 3-5 mm, villous; leaf blade oblong to obovate, 2-4 × 1.2-2 cm, adaxially villous, abaxially tomentose, base cuneate-decurrent, margin of apical half crenate, apex rounded to obtuse. Spikes 6-8 cm, villous; bracts oblong-lanceolate to obovate-lanceolate, shorter than calyx. Pedicel ca. 1.5 mm, densely yellow villous. Calyx campanulate, ca. 5 × 3.3 mm, densely yellow villous outside, throat pilose annulate; middle tooth of upper lip oblate, apex acute, lateral teeth obliquely ovate-triangular, lower lip teeth subulate. Corolla 1.1-1.2 cm, pilose outside, white puberulent inside, tube ca. 1/2 as long as corolla; middle lobe subcircular, clawed, lateral lobes ovate-lanceolate. Nutlets brown, oblong, ca. 1 mm, slightly netted. Fl. Aug-Sep.
* Grassy slopes. Sichuan, Yunnan.