Spreading or erect shrub to 1.5 m tall. Leaves narrowly ovate to elliptic, to 1 cm long, 4 mm wide, lower surface hairy, upper surface warty, margins bent under, tip with a point bent down; stalk about 0.5 mm long. Flowers terminal, of few flowers. Corolla about 1 cm long, orange-yellow with red markings. Fruit pod about 1 cm long, containing 2-4 seeds.
M. dilatata R. Br., Holly-leaved Mirbelia, from WA is sometimes grown and has holly-like spiky leaves to about 3 cm long.
Source: (2002). Fabaceae. In: . Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.