Perennial semi-succulent herb, freely branched, up to 0.2 m tall; stems decumbent, rooting at the lower nodes, glandular-tomentose. Leaves petiolate; blade semi-succulent, broadly ovate to suborbicular, 30-40(-45) x 25-40(-45) mm, sparingly villous, upper surface light-veined, lower surface purple with colourless gland-dots, apex acute to obtuse, base abruptly cuneate, margin crenate-dentate, ciliate; petiole 15-40 mm long. Inflorescence simple or branched, racemes 70-200 mm long, flowers in sessile, usually 3-flowered cymes, forming 6-flowered verticils 10-15 mm apart. Calyx up to 8 mm long in fruiting stage, glandular-hispidulous. Corolla whitish or suffused with pale mauve; tube 8-13 mm long, expanding and forming a saccate base 4 mm deep then narrowing gradually to about 1.75 mm at the throat; upper lip 5 mm long; lower lip concave, 4-5 mm long. Stamens free, 2-3 mm long.
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