Shrub or small tree, up to 8 m high. Branchlets greyish brown tomentose. Leaves simple, ovate to lanceolate; upper surface dark green, glabrous; lower surface sometimes slightly pubescent. Inflorescences axillary or rarely terminal racemes, 30-100 mm long. Flowers white and strongly violet-scented. Calyx 2-lobed, toothed. Petals: standard with a yellow spot near base; wings and keel with a pocket near base. Flowering time Sept.-Jan. Pod straw-coloured, containing 1 or 2 seeds.