Description from Flora of China
Herbs annual or biennial, to 30 cm tall, not drying black. Stems with 4 lines of hairs, internodes to 10 cm basally. Basal leaves withering early; petiole to 1.8 cm, sparsely pubescent. Stem leaves in whorls of 4, short petiolate to sessile, elliptic-lanceolate to oblong-lanceolate, 1.5--2.5 cm X 5--10 mm, abaxially pubescent and white scurfy, adaxially densely white villous, pinnatipartite; segments 5--7 pairs, linear-lanceolate, incised-dentate, teeth callose. Inflorescences spicate, interrupted basally; proximal bracts leaflike, pubescent. Calyx ca. 3.5 mm, 1/3 cleft anteriorly, veins reticulate; lobes 3, unequal, barely 1 mm, posterior one triangular, white villous along veins and ciliate. Corolla purple-red, ca. 1.5 cm; tube slightly decurved basally, expanded apically; galea slightly falcate, rounded in front; lower lip ca. 5.8 X 7 mm, middle lobe much smaller than lateral pair. 2 filaments villous, 2 glabrous. Capsule obliquely ovoid. Fl. Jun, fr. Jun--Jul.
* Grassy slopes; ca. 1300 m. WC Guizhou.