Twiggy soft shrub 0.6-2.5 m tall; branches pale brown, minutely tomentulose, often glabrescent with age. Leaves petiolate; blade subcoriaceous, ovate to ovate-lanceolate, 8-20(-30) x 3-8(-12) mm, upper surface dark greenish brown, subglabrous to tomentulose, lower surface paler, gland-dotted; secondary nerves not visible above, 2-3 pairs faintly visible below, apex subacute to obtuse, base obtuse to truncate, margin entire; petiole 3-10 mm long. Inflorescence lax, 50-100 mm long, of few to several verticils borne terminally and on twiggy side-shoots; verticils 1-2-flowered; pedicels about 7 mm long with a pair of minute bracteoles about the middle. Calyx becoming ovoid, inflated, coriaceous, straw-coloured, 12-18 x 7-12 mm, lips 2-3 mm long. Corolla violet-scented, chocolate to purplish brown, 14-18 mm long; tube 6-9 mm long; upper lip 2-3 mm long, about 5 mm broad; lower lip broadly 3-lobed, 5-8 mm long, 8-10 mm broad. Nutlets, excluding the wing, 5-7 mm long, minutely tomentulose; wing broadly elliptical, about 8 x 6 mm.
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