Shrubs or trees up to 5 m tall, forming sturdy trunks with age. Joints flattened, narÂrowly elliptic to ovate, varying in size, 30-60 cm long and 6-12 cm broad, attenuate below, often acute above, fairly thick, glaucous-green; areoles small to large, and then raised and woolly, with 3-6 radiating, unequally long, greyish white spines up to 3 (-10) cm long, straight or occasionally slightly curved, or spineless (in older plants and some cultivars). Leaves, if developed, minute, subulate, early deciduous. Flowers about 7 cm long; hypan-thium broadly cylindrical, contracted below, with numerous raised areoles spirally arranged, densely woolly and filled with glochidia, occaÂsionally also bearing small spines and minute leaves; petaloid segments yellow or orange. Fruit ellipsoid, c. 7 cm long, reddish, succulent, edible; seeds about 5 mm long.