Herbs small. Stems thick, short. Inflorescences subcapitate or subcorymbose; bract 1, long ovate or ovate-lanceolate; bractlets 2, linear or linear-lanceolate. Calyx tubular, apex 5-lobed. Corolla yellow or purple, bilabiate; tube longer than lip; upper lip entire or emarginate, larger than lower lip; lower lip 3-lobed. Stamens 4, included; anthers 2-celled, connective not elongated. Carpels 2; ovary 1-locular; parietal placentas 4. Style elongated; stigma subglobose. Capsule oblong or ovoid-globose. Seeds numerous; testa reticulate.

Two species: China, Russia; both species in China.