Herbs, perennial, terrestrial or epipetric, rhizomatous, stemless. Leaves many, basal; leaf blade puberulent to pubescent, rarely woolly, base broadly cuneate to subrounded. Inflorescences lax, axillary, 2-8-flowered cymes; bracts 2, opposite. Calyx actinomorphic, 5-sect from base; segments equal. Corolla white to purplish, zygomorphic, inside glabrous; tube tubular to funnelform-tubular, not swollen, longer than limb, ca. 4 mm in diam.; limb 2-lipped; adaxial lip undivided, 1.5-4 X shorter than abaxial lip; abaxial lip 3-lobed, lobes subequal or central lobe longer, apex rounded. Stamens 2, adnate to abaxial side of corolla tube above middle, exserted; anthers basifixed, free or coherent at apex, thecae parallel, not confluent, dehiscing longitudinally; connective not projecting; staminodes 3 or absent, adnate to adaxial side of corolla tube. Disc ringlike. Ovary linear, 1-loculed; placentas 2, parietal, not projecting inward, 2-cleft. Stigma 1, terminal, truncate to depressed capitate, undivided. Capsule straight in relation to pedicel, linear, much surpassing calyx, dehiscing loculicidally to base; valves 2, straight, not twisted. Seeds unappendaged.
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