Xerophyte

Seeds

Dark brown to black, 3 × 2 mm, papillate and rugose.

Description

It is a small, generally solitary (or with a very few branches) cactus.

Lateral Spines

Curved upward, 8-21 long,

Blooming Season

Spring.

Spines

Usually radial and central (rarely all radial) soft corky or spongy, harder at tips, white to pale grey and sometimes 0-1 intermediate spines per areole

Stem

Stems grey-green, obovoid, or depressed-globose up to 2,5(6) cm tall and averaging 1.5(5) cm in diameter.

Radial Spines

Usually 4 (o more) that form a twisted cross, 3-7 long.

Fruits

Dry, turbinate, 6-11 × 5-8 mm turning tan at maturity, dehiscing by both a dorsal slit and by a ring around the circumscissile apex.

Areoles

Areoles circular, woolly.