Perennial herb, 0.1-0.2 m high; straggling, stems slender, sparingly branched, internodes long, softly pilose. Leaves long petiolate, thin-textured, broadly ovate, 35-65 x 25-55 mm, base deeply cordate, apex acute or subacute, margins regularly crenate; softly pilose especially on nerves. Inflorescence of 1-3 verticils, subcapitate or interrupted; verticillasters 4-6-flowered. Flowers subsessile; pinkish white-flecked with mauve or deep mauve. Calyx softly hispid. Corolla: tube 12-18 mm long, arcuate or nearly straight; upper lip ascending; lower lip deflexed.