Xerophyte

Central Spines

5 to 10, fine, bristly to needle-like 10-40 mm long.

Flowers

Slightly oblique, pink or (rarely) orange-red, 5-7 cm long, 3-4 cm across.

Spines

Thick, covering the plants, white to pale yellow, bristle-like, forming erect tufts apically.

Ribs

22-30, tuberculate.

Stem

Normally solitary, spherical to shortly columar, green to grey-green, to 75 cm tall and 12 cm in diameter.

Radial Spines

15 to 20, bristle-like,10-50 mm long.

Fruits

Egg-shaped, green, to 20 mm long and 5 mm in diameter.