Perennial semi-succulent herb; stems procumbent up to 0.4 m long, sparingly branched, tomentose. Leaves petiolate; blade softly semi-succulent, drying fairly thin in texture, broadly ovate to subrotund, 15-50 x 15-50 mm, sparsely to densely pubescent, under-surface with yellowish gland-dots, apex obtuse to rounded, base truncate to cordate, margin deeply scalloped with few large teeth; petiole 14-30 mm long. Inflorescence usually simple or with a pair of branches near the base; racemes 100-250 mm long; flowers in sessile 3-6-flowered cymes forming 6-12-flowered verticils 10-20 mm apart; bracts early deciduous. Calyx 4 mm long at fruiting stage, gibbous at the base. Corolla blue, purple-blue or lilac, 8-12 mm long; tube bent about the middle; lower lip boat-shaped, 4-5 mm long. Stamens free to the base, 4-6 mm long.
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