Branchlets puberulous. Leaves 2.5-8 mm long, alternate, erect-spreading, ovate, rotund-ovate, lanceolate-ovate or obovate, acute, subacute or obtuse, rounded at the base, slightly concave above, gland-toothed at the margin, widely convex and with occasional glands beneath, glabrous, ± pubescent beneath, or ciliate at the base. Flowers in terminal clusters. Peduncles 0.75-2 mm long, glabrous or hispidulous, subtended by narrowly linear or oblanceolate-linear ciliate bracteoles. Sepals 1-3.5 mm long, oblong-or deltoid-ovate or rotund, obtuse or subacute, membranous at the margin, ciliate, sometimes with stalked glands at the margin, rounded or obtusely keeled beneath on the upper half, with a gland behind the apex. Petals 2.5-5.5 mm long, glabrous; blade obovate or subrotund; claw 1-2 times as long, narrowly linear. Stamens glabrous. Staminodes 1.75-4.75 mm long, narrowly linear, oblanceolate or oblanceolate-oblong in the upper half, obtuse or retuse, tapering downwards, glabrous, with a conspicuous apical gland. Disk crenulate. Ovary tubercled on the upper half, with 5 carpels bearing oblong, truncate, dorsally compressed processes furrowed above, sparsely setose about the apex, with 2 apical glands. Style ± pubescent on the lower half. Fruit with closely set tubercles tipped with red glands.
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Usually densely leafy shrub to 60 cm, peppermint-scented. Flowers in dense, terminal heads, white to purple. Fruits 5-chambered with long processes.