Shrub about 40 cm high, with slender puberulous and sparsely pilose branchlets. Leaves 4-6 mm long, alternate, erect-spreading, slightly incurved, linear, obtuse, rounded at the base, concave and glabrous above, with closely involute margins, rounded, tubercled and hispid beneath, with prominent glands. Flowers in terminal clusters. Peduncles 0.75-1 mm long, hispidulous, with linear pilose bracteoles near the apex, subtended by linear pilose-ciliate bracts. Sepals 1.5-2 mm long, oblanceolate-oblong, obtuse, pubescent above, hyaline at the margin, pilose-ciliate, rounded and sparsely pubescent beneath, gibbous and with prominent glands behind the apex. Petals 6 mm long; blade narrowly obovate; claw 1.5 times as long, slender, pilose on the lower half. Stamens glabrous. Staminodes 3-3.5 mm long, with an oblanceolate blade and slender pilose claw adnate almost half the length to the petals. Disk conspicuous, crenulate. Ovary ± puberulous or pubescent, with 2 or rarely 3 carpels bearing minute rounded processes. Style sparsely pubescent.
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Wiry shrub to 1 m, strongly aromatic. Flowers in dense, woolly heads, white and mauve. Fruits 2(3)-chambered.