Xerophyte

Central Spines

3 to 14, depending on specimen and age, on the first start of flowering 2-7, nearly straight or slightly bent downwards, 10-30 mm long.

Seeds

Ca 2x1 mm.

Flowers

Yellow, wide opening, about 27 mm long, and 32 mm.

Blooming Season

Spring to summer, flowers opens during the warmer hours for several days.

Spines

Needle-shaped, brown, with dark tips, greying with age.

Ribs

Usually 14-18, notched where the areoles grow, 7-15 mm high.

Stem

Solitary, spherical becoming cylindrical to 20 cm (or more) tall and 5-12 cm thick, bluish-green, apex woolly even in young specimens.

Radial Spines

8-17, nearly straight not exceed a length of 5-15 mm.

Fruits

Green or reddish, with 2-3 mm long scales and ample white wool.

Areoles

Oval, white to brownish woolly 5-10 mm long, 5-12 mm apart.