Clustering, body globular or elongate, to 4.5 cm wide and to 6 cm high without milky sap. Tubercles prominent, ovoid. Axils bare. Central spines 4, 8 mm long, reddish-brown, one with tip hooked. Radial spines 15-18, to 10 mm long, white, fine. Flowers white, pink, purple or violet, to 2 cm long. Fruit pale.

C Mexico

Source: Thompson, A, ; Forbes, S.; Spencer, R. (1997). Cactaceae. In: Spencer, R.. 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.