Body mostly simple more or less spherical to cylindrical. Ribs 12-17, tuberculate. Central spines 4-8, lowermost curved or hooked, radial spines 8-20. Flowers to about 7 cm wide, yellow. Fruit brown to pink, red or green.

E Mexico

 

Another species has the single letter spelling difference F. haematacanthus (Salm-Dyck) Backeb. & F.M. Knuth is occasionally cultivated: it is similar to F. histrix (DC.) G.E. Linds. but has distinctive yellow-tipped red spines and purplish flowers.

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.