Description from Flora of China
Herbs perennial, rhizomatous. Stems erect, ca. 70 cm tall, densely antrorse puberulent, unbranched, internodes slightly longer than leaves, ca. 6.5 cm at mid stem. Leaves deciduous basally; petiole ca. 1.5 cm at mid stem; leaf blade lanceolate-ovate, 4-5.5 × 2-5.5 cm, adaxially sparsely puberulent, abaxially very densely purple glandular, veins densely pubescent, base shallowly cordate, margin irregularly serrate, apex acuminate to caudate-acuminate. Racemes terminal and axillary, to 6 cm, few flowered, axillary racemes each with a basal pair of leaves; bracts lanceolate to linear, 0.4-1.3 cm × 1-4 mm, margin remotely dentate to entire. Pedicel to 3 mm, densely glandular puberulent. Calyx ca. 4 mm, densely glandular puberulent outside; scutellum ca. 1.5 mm. Corolla purple, ca. 1.3 cm, glandular pubescent outside, glabrous inside; tube erect, slightly saccate; middle lobe of lower lip ovate, ca. 4 mm wide, margin subentire; lateral lobes ovate, ca. 1.5 mm wide. Fl. May.
* Hillsides; ca. 500 m. Henan, Hubei.