Xerophyte

Central Spines

2 to 6 stronger 2-5 cm long.

Seeds

Small, 4 x 0.9 mm glossy black.

Roots

Tuberous, long, with a slightly narrowed neck.

Flowers

Diurnal closing at night, protracting the period of opening many days and arising on the crown, often several at a time, nearly hidden in the dense wool. Glossy, pale yellow, some with red/pink tones or red, 3,5-4,2 cm long and up to 5,5 cm in diameter, and with a faint scent.

Spines

Straight brown/tan or blackish (later grey) more or less uniform.

Ribs

10 to 17 prominent, not wavy, obtuse up to 15 mm. wide.

Stem

Globose to somewhat elongated, 6 to 10 cm in diameter, pale green or olive green crowned by a dense mass of silky grey or creamy white wool, particularly at flowering time.

Fruits

Red, globose to ovoid about 14 mm in diameter and scaly.

Habit

It branches very sparingly from the base to form large clusters up to 70 cm tall and 50 cm across.

Blooming Season

Flowers throughout the whole summer.

Radial Spines

7-12 about 1,5-4 cm long.

Areoles

Round to oval, covered with white or greyish-brown felt or wool up to 1 cm apart.