Xerophyte

Habit

Solitary or slowly clustering,

Central Spines

one or two central spines of the same length.

Seeds

Microsemineum type, section pirisemineum, very small (0.6 X 0.4 mm), testa reddish, shining and smooth.

Roots

Fibrous

Flowers

Bell-shaped near the apex, diameter and height 45-50 mm. Pericarpell dull green and very short. External tepals are spatulate, slightly bent outward, white with brownish green midribs. The inner tepals are narrower, spatulate and slightly denticulate, white with a carmine-pink, purplish throat. Styles are carmine with carmine pink 10-12 lobes. Pollen is yellow.

Spines

Strong, bent, initially blackish with a brown base then becoming grey-pinkish with black point.

Ribs

10 to 12 thick, divided into polygonal rounded (not chinned) tubercles, separated by arched furrows.

Stem

10-15 (25) cm in diameter, 10 cm tall, pale green that turns to an orangish purple in full sun. The epidermis has a velvety appearance. The apex is slightly depressed and woolly.

Radial Spines

7-9 (5), up to 25mm long.

Fruits

Sub-spherical, approximately 2 cm in diameter, becoming greenish white to orange at maturity. Pulp is white (not cherry-red).

Areoles

Large, oval, 10x14mm, yellowish then blackish, dismantling with time.