Branched, pubescent herbs. Leaves to 5.6 x 3.1 cm, ovate or suborbicular, base cordate, margins finely serrate, apex obtuse or acute, fleshy; petiole to 2 cm long. Flowers shortly pedicelled, in dense thyrsoid panicle. Calyx hispid, small, the upper lip ovate, acute, lower of 4 acuminate lobes, throat glabrous within. Corolla purple, 2-lipped, tube decurved. Stamens 4, didynamous; anther cells confluent. Ovary 4-partite; stigma 2-fid. Nutlets smooth.