Suffrutex, erect, 45-60 cm tall, much branched, branches pubescent to glabrescent, hairs short, patent to reflexed, the upper more or less 4-angled. Leaves 2-5 cm long, 0.2-1 cm broad, linear to narrowly oblong, sometimes slightly narrowed to the base, oblong-oblanceolate or oblong-lanceolate, densely pubescent to glabrescent, hairs short, spreading to deflexed, upper surface usually rough, margin revolute. Inflorescence of lax cymes, 1-2-flowered, terminal or in axils of the upper leaves. Calyx about 1.3 cm long, rarely 2 cm long, fitting loosely round the base of the corolla tube, roughly pubescent outside, sometimes glabrescent, hairs rather short, patent or slightly reflexed, 5-lobed to just beyond midway, or almost to the base, lobes without a dorsal keel, margins hyaline towards and at the apex. Disc with a ring of glands between the calyx and corolla. Corolla usually deep pink, rarely a specimen with white flowers found, 2-3.3 cm long; tube as long as or slightly longer than the loosely enveloping calyx, somewhat narrowed above the ovary, lobes oblong, then broadest at the apex, to suborbicular, broadly rounded at the apex with a central mucro. Stamens inserted below the mouth of the tube; anthers slightly twisted. Ovary oblong-elliptic in outline, shortly narrowing into the style; stigma peltate, terminal, thickly stigmatose on top and along the margins. Capsule enclosed in the calyx, eventually splitting in two.
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Pubescent shrublet to 80 cm. Leaves oblanceolate, margins revolute. Flowers 1 or 2 terminal and in upper axils, shining deep pink, anthers twisted, porose.