Stems ± procumbent or erect, branched or not. Leaves usually opposite, occasionally in whorls of 3 or 4; leaf blade often ovate-oblong, pinnatifid. Calyx 5-lobed. Corolla tube erect; galea often bent apically, longer than lower lip, beakless, with 1 or several marginal teeth near apex, beakless.

Eleven species: China, Sikkim; all 11 species in China.