Procumbent, succulent herb, rooting at nodes, glabrous or sparsely pubescent; roots fibrous. Stems 4-angled, purplish to green, 2.5 mm in diameter, strigose (white multicellular hairs), rubropunctate; internodes 5-20 mm long. Leaves ovate to broadly ovate, 12-15 x 10-15 mm, serrate to crenate-dentate, with 3 or 4 pairs of teeth, green to purplish, abaxial surface sparsely strigose, veins densely strigose, rubropunctate, base cuneate, apex obtuse to acute; petioles 5-15 mm long, strigose and rubropunctate. Raceme simple, 30-100 mm long, rarely with a pair of side branches; cymes 1-flowered, verticillasters 5-10 mm apart; bracts ovate-lanceolate, 2-3 mm long; pedicel 4-5 mm long. Calyx at flowering 3-4 mm long, enlarging to 7 mm, consisting of a large, ovate upper lip 2 mm long (4 mm after flowering) and 4 subulate lower lobes, 3.5 mm long (5 mm long after flowering), densely strigose, with longer purplish hairs. Corolla 9-11 mm long, white or mauve; tube straight, 5 mm long, basally saccate, constricted distally; upper lip 5 mm long, 2-lobed, upper lobes 3 mm long, lateral lobes 2 mm long, with long multicellular white hairs, lower lip boat-shaped, margins strongly involute. Nutlets brown to black, ovoid, 1.5 x 1.0 mm.
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Perennial, procumbent, succulent herb, mat-forming; stems rooting at nodes, 4-angled, internodes 5-20 mm long, strigose with white, multicellular hairs; roots fibrous. Leaves ovate to broadly ovate, 12-15 x 10-15 mm, base cuneate, apex obtuse to acute, margins serrate to crenate-dentate, with 3 or 4 pairs of teeth; lower surface sparsely strigose, rubro-punctate. Inflorescence simple, rachis 30-100 mm long; verticillasters 1-or 2-flowered. Flowers white or mauve. Calyx 3-4 mm long at flowering, enlarging to 7 mm, densely strigose. Corolla 9-11 mm long; tube straight, basally saccate, constricted distally; upper lip 2-lobed; lower lip boat-shaped, margins strongly involute. Flowering time Mar.-May.
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