Body columnar to 1.5 m high, 10-20 cm wide with 8 acute ribs. Areoles with 5-11 straight spines to 3 cm long. Flowers yellow to 10 cm wide. Fruit opening at apex.

CE 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.