Description from Flora of China
Herbs, perennial, subglabrous. Rhizomes long, slender, with fibrous roots. Stems short. Leaves few, opposite, lower ones scalelike; petiole short, winged; leaf blade pinnately veined. Inflorescences terminal, short, few flowered. Calyx campanulate; lobes 5, subequal, as long as tube. Corolla 2-lipped; tube cylindric; lower lip large, spreading flat, with 2 plaits at base, 3-lobed, middle lobe entire or 2-lobed; upper lip 2-lobed or divided, erect or spreading flat, slightly arched. Stamens 4, didynamous; filaments glabrous or hairy; anther locules distinct, diverging. Ovary glabrous. Stigma fanlike or 2-lamellate. Fruit globose, berrylike, nearly fleshy, indehiscent. Seeds numerous; seed coat thin.
Two species: Bhutan, China, India, Mongolia, Sikkim; both species in China.