Solitary or clustering, body globular or elongate, to 5 cm wide and 30 cm high, with milky sap. Tubercles prominent, pyramidal. Axils bare. Central spine solitary, 5 mm long, white or pinkish, translucent, tip red, later grey or brown. Radial spines 18-20, 2-3 mm long, white, translucent, base yellowish. Flowers purplish brown, 1.2 cm long and wide. Fruit green.

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.