Xerophyte

Habit

Solitary, or sparsely clumping

Central Spines

Up to 4 per areole, very long, curved or slightly hooked, principal central spine thin more or less flattened, 5-10(-20) cm long, 0,4-3 mm, more or less flexible.

Seeds

About 1 mm.

Flowers

Pale yellow 6-7,5 long, 7-9 cm in diameter; stigma lobes 8-10.

Blooming Season

Early summer to autumn in succession.

Spines

12-16 per areole.

Ribs

typically 13 ( to 17), undulate to deeply crenate, with massive tubercles swelling around each areole.

Stem

Spheric to ovoid, dark green 10-30 × 7.5-20 cm.

Fruits

Egg-shaped, green, yellow-green, or olive, 20-45 long and 10-35 mm in diameter.

Areoles

1-3 cm apart, young ones with yellow felt. The areolar gland are numerous bright red up to 1 cm long.