Body solitary, occasionally clustering becoming cylindrical. Ribs 13-20. Areoles close-set on mature plants. Central spines straight and a characteristic red, radials whitish and hair-like or absent. Flowers reddish. Fruit yellow sometimes tinged red.
Mexico
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.
