Freely clustering, body globular, to 8 cm wide or eventually elongate to 18 cm high with milky sap. Tubercles prominent, angular. Axils woolly and bristly. Central spines 2-4(-6) to 4 cm, whitish, tips brown. Radial spines 16-20, 5-7 mm long, whitish. Flowers yellowish with reddish central stripe, 15-19 mm long and wide. Fruit red.
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.