Description from Flora of China
Herbs perennial, rhizomatous. Stems 35-45(-60) cm tall, erect, unbranched, ca. 3 mm in diam., densely pubes-cent apically. Leaves ca. 5-paired; petiole 1.5-3 cm; leaf blade obovate-elliptic, 7-11 × 3.5-5.2 cm, pubes-cent, densely so and gray-green abaxially, base cuneate, margin inconspicuously undulate-serrate to entire, apex acute. Racemes terminal, 10-16 cm; bracts linear, 3-4 mm, pubescent. Pedicel 4-5 mm, densely pubescent. Calyx ca. 3 mm, puberulent; scutellum spreading, ca. 2.2 mm. Corolla reddish; tube 2.1-2.3 cm, base bent, throat to 8 mm wide; lower lip with red spots, 2.6-2.9 cm, puberulent outside; middle lobe triangular ovate, base ca. 3.5 mm wide, apex emarginate; lateral lobes ovate, ca. 2.5 mm wide. Nutlets unknown. Fl. May-Jun.
* Shady areas in forests; ca. 1200 m. Sichuan (Emei Shan).