Solitary, body globular, 4-6 cm wide, root turnip-like, without milky sap. Tubercles prominent, short conical. Axils bare. Central spines lacking. Radial spines 25, 5-20 mm long, white, comb-like. Flowers yellowish with reddish central stripe, to 14 mm long. Fruit partially embedded in body, greenish.

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.