Acanthocereus colombianus – Britton & Rose 1920
Plants large shrubs, erect to arching, to 3 m (9.8 ft) high. Stems strongly three- or four-winged, to 9 cm (3.5 in) thick, with acute, deeply wavy margins.
Areoles large, to 5 cm (2 in) apart.
Central spines 1-2, very stout, to 55 mm (2.2 in) long.
Radial spines 5-8, stout, less than 5 mm long.
Flowers to 25 cm (9.8 in) long. Fruits red, tough, spiny.