Shrub to 1.5 m high. Branchlets terete, with leaf bases not decurrent, glandular-verrucose, densely stellate-tomentose when young, becoming glabrous with age. Leaves trifoliolate; petiole 5–12 mm long; central leaflet narrowly elliptic, (8–) 11–30 (–37) mm long, 1–4.5 mm wide, slightly recurved or sometimes revolute at margins, obtuse to acute, weakly glandular-verrucose on adaxial surface, margin and abaxial midrib; adaxial surface glabrous except a few simple or stellate hairs along midrib and near base, abaxial surface densely stellate-tomentose except raised midrib, with secondary veins obscure. Inflorescences shorter than leaves, 12–21+-flowered. Sepals 1–1.2 mm long, glandular-verrucose, with few hairs adaxially, stellate-tomentose at base abaxially, with few hairs between glands. Petals imbricate, 1.8–3 mm long, white, stellate-tomentose both sides. Filaments glabrous or with few scattered minute hairs, eglandular. Cocci not or slightly glandular-verrucose, glabrous.
Grows in rocky clefts (e.g. rhyolitic ignimbrite) on pavements, in tall open shrubland, in an ecotone between woodland and fragmented semi-evergreen vine thicket, and in woodland on rock faces or rubble at cliff bases.
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