A low shrub with pubescent branchlets. Leaves 4-7 mm long, alternate, ascending or erect-spreading, lanceolate, obtuse or subacute, often laterally compressed at the apex, rounded at the base, slightly incurved towards the apex, concave and glabrous above, obtusely keeled and ± pubescent or pilose beneath, sometimes only on the keel and margin. Flowers in terminal clusters. Peduncles mostly 5-6 mm long, villous, usually purple, with bracteoles on the lower half. Sepals 2.5-3 mm long, lanceolate or ovate-lanceolate, subacute, sparsely pubescent above, obtusely keeled and ± pubescent or villous beneath, rarely glabrous, conspicuously membranous at the margin. Petals 4-5 mm long; blade obovate, rounded at the apex, sometimes with a few hairs above; claw almost as long, narrowly linear, glabrous. Stamens glabrous. Staminodes 3.5-4.5 mm long, linear, obtuse, with a gland behind the apex, tapering towards the base, villous shortly below the middle. Ovary glabrous, with 2 carpels bearing oblong processes. Style glabrous.
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Single-stemmed shrublet to 40 cm. Flowers in lax, terminal clusters, white to bright purple. Fruits 2-chambered.