Solitary or clustering, body depressed globular to 5 cm wide, root turnip-like, without milky sap. Tubercles prominent. Axils bare or woolly. Central spines lacking. Radial spines 10-12, 8-9 mm long, whitish or yellowish. Flowers rose-pink to carmine, to 4 cm wide. Fruit depressed.

SW 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.