Description from Flora of China
Herbs. Stems erect, to 90 cm, ± succulent, puberulent or subglabrous. Petiole slender, 2.5-5 cm; leaf blade ovate, 4.5-14.5 × 3-7 cm, membranous, puberulent or subglabrous, base broadly cuneate to shallowly cordate, margin crenate, apex acuminate. Panicles lax, terminal, to 42 cm, pubescent, verticillasters many flowered; peduncle 1-3 mm; bracts early deciduous. Pedicel 4-6 mm. Calyx campanulate, 3-4 mm in flower, to 8.5 mm in fruit, subglabrous or puberulent, densely rust colored glandular; teeth subequal, posterior 1 ovate, apex acute, reflexed in fruit; lateral and anterior teeth lanceolate, apex acuminate, straight. Corolla purple to reddish, puberulent, rust colored glandular, 1.6-1.8 cm; tube much exserted, abruptly reflexed beyond calyx, throat to 2 mm wide; limb 1/8-1/6 as long as tube, upper lip erect; lower lip slightly elongated, concave. Nutlets ovoid-globose. Fl. Sep.
* Forest margins, open areas, fields, rocky areas, wet forests; 1000-2200 m. Yunnan.