Original Description:The Cactaceae 2
p.80 - Britton & Rose (1920)
Stems 1 to 1.5 meters high, more or less branched, erect or sometimes with recurved branches; ribs 5 or 7, usually 6, thin, 5 to 15 mm deep, scalloped; areoles 1.5 to 2 cm apart, circular; spines when young of a decided yellowish-brown color, dark brown or sometimes whitish in age, about 20 from an areole, needle-shaped, the longer ones 3 cm long; flowers 5 to 6 cm long; inner perianth-segments about 32, spreading at right angles to the tube, linear-oblong, yellowish green inside, the outer obtuse, the inner acute; stamens cream-colored; ovary and flower-tube densely covered with yellowish spines; immature fruit bur-like, 4 cm long, densely covered with yellow or brownish spines.
This icon appears next to images that have been 3rd party verified. Click Here to learn more. Click any picture below to enlarge.