Solitary or clustering, body globular, to 5.5 cm wide, without milky sap. Tubercles prominent, conical. Axils with 1-5 white bristles to 1 cm. Central spines 1(-2), 12 mm long, yellowish, tip hooked, brownish. Radial spines 16-24, to 10 mm long, white. Flowers greenish yellow, 3 cm long, 2.5 cm wide. Fruit greenish-brown.
Source: (1997). Cactaceae. In: . Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.