Xerophyte

Habit

Solitary or forming large clumps up to 1 m wide densely covered by spines.

Flowers

Clear yellow, 3,5 cm long.

Spines

10-20, densely distributed, needle-like, long, very thin, straight or curved, flexible usually white or greyish, occasionally brownish.

Ribs

13 to 24 ribs, straight.

Stem

Globose to cylindrical usually grey to green in hue, up to 12 cm wide with a woolly crown.

Fruits

White or rose, up to 1 cm long.

Areoles

Large, roundish, with grey wool.