Xerophyte

Flowers

Arise from the areole at the tip of the stem on mature plant. up to 5 cm wide (or more), pale-yellow, shining-silk, unlike the 5-ribbed plant.

Blooming Season

Spring or late summer, They take up to 6 years to bloom.

Spines

None.

Ribs

6 to 10 (Usually 7 or 8)

Stem

Almost spherical, the plants become shortly columnar with age. The stems are smooth and can be over 90 cm tall and 5-10 (-20) cm in diameter.