Xerophyte

Central Spines

4-10, straight or curved, 2.5-6 cm long.

Description

Usually solitary globular cactus, up to 18 cm in diameter.

Flowers

Nocturnal, broad funnelform, white to pink, up to 19 cm long.

Spines

Light yellow to dark brown.

Ribs

16-21, sharply notched, to 1.8 cm high

Stem

Flattened globose, green, 12-18 cm in diameter

Radial Spines

12-20, needle-like, 1.5-4 cm long.

Fruits

Green, to 4 cm long and 3 cm in diameter.

Areoles

Sunken, whitish, to 2 cm apart.