Description from Flora of China
Herbs, perennial, epipetric, rhizomatous, stemless. Leaves few to many, basal; leaf blade puberulent to sericeous, base broadly cuneate to subcordate. Inflorescences umbel-like, dense, axillary, few- to many-flowered cymes; bracts more than 10, involucrate. Calyx actinomorphic, 5-sect from base; segments equal. Corolla red, zygomorphic, inside sparsely puberulent; tube narrowly funnelform-tubular, not swollen, 4-5 X longer than limb, ca. 5 mm in diam.; limb 2-lipped; adaxial lip 4-lobed, longer than abaxial lip; abaxial lip undivided, apex acute to rounded. Stamens 2, adnate to abaxial side of corolla tube above middle, included; anthers dorsifixed, coherent by adaxial surfaces, thecae divaricate, confluent at apex, dehiscing longitudinally; connective not projecting; staminodes 2, adnate to adaxial side of corolla tube. Disc ringlike. Ovary linear, 1-loculed; placentas 2, parietal, projecting inward, 2-cleft. Stigma 1, terminal, depressed globose, undivided. Capsule straight in relation to pedicel, linear, much surpassing calyx, dehiscing loculicidally to base; valves 4, straight, not twisted. Seeds unknown.
One species: China, N Vietnam.