Soft shrub up to 1 m tall, branching usually from the base; stems few to many, glandular-pilose. Leaves petiolate; blade ovate to ovate-lanceolate, 20-55 x 6-30 mm, upper surface dark brown and shortly glandular-pubescent, under-surface canescent, apex acute to obtuse, base cuneate to obtuse, margin regularly serrate-dentate in the upper two-thirds; petiole 6-14 mm long. Inflorescence usually paniculate, lax, 100-300 mm long; verticils 4-6-flowered; apical bracts sometimes persisting as a purple coma, usually rather small, 5-10 x 3-5 mm, more often the apex of the raceme is broken off, lower bracts caducous. Calyx 8-9 mm long at maturity, glandular-tomentose. Corolla pale mauve to lilac, 17-20 mm long; tube 13-16 mm long, expanding to 3-4 mm wide at the mouth; lower lip 4 mm long. Stamens well exserted beyond the lower lip; upper pair attached about 3 mm from base of tube, filaments puberulous near the base; lower pair united for more than half their length. Stigma swollen, emarginate.
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