A comparatively tall shrub up to 2-4 m high, with puberulous pubescent or rarely glabrous branchlets. Leaves 0.6-1 cm long, alternate, erect-spreading, linear-lanceolate or lanceolate-linear, subacute, rounded at the base, concave or rarely almost flat above, slightly convex and usually nerve-keeled beneath, with glands mostly in rows at the margin and near the nerve, often pilose on the margin nerve and apex. Flowers in terminal clusters. Peduncles 4-6 mm long, glabrous or pubescent or with small stalked glands, with slender bracteoles on the lower half. Sepals 1-1.5 mm long, ovate or subrotund, sometimes shortly tapered, obtuse, obtusely keeled, glabrous, rarely ciliate, or with stalked glands on the upper margin. Petals 3.5-6 mm long; blade obovate or elliptic-oblong, very obtuse, with a gland behind the apex; claw half as long, linear, ciliolate or glabrous. Stamens glabrous. Staminodes 2-6.5 mm long, linear in the upper half, obtuse, sometimes widened at the apex, with a gland behind the apex, tapering in the lower half, ciliate on the lower half or almost to the apex. Ovary with 2 carpels bearing oblong processes sometimes with long hairs on the apex. Style glabrous.
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Willowy shrub to 2.5 m, strongly aromatic. Flowers in terminal clusters, purple, bright pink or white. Fruits 2-chambered.