Xerophyte

Central Spines

1 to 2, thicker, 4 to 6 cm long, arising perpendicularly and a little recurved.

Cephalium

Up to 8 cm tall and -4 cm wide, at the apex of the plant, creamy-white.

Habitat

It is a squat solitary plant that often in culture produces offsets.

Flowers

White, scented, slender, funnel-shaped , 2 to 9 cm long that open at night. The position of the stigma is at the top of the stamens. Each flowering lasts only one night, but that night it produces many flowers.

Spines

White to creamy-white (or light brown), tending to become grey towards the tips with age, subulate and stronger than in other subspecies.

Ribs

12 to 13, somewhat spiraled, forming nipple-like tubercles to 1 cm high.

Stem

Green to pale green, approx 12 cm in diameter and 7-8 cm tall.

Radial Spines

9 to 11 interlacing, densely covering the plant, to 3 to 5 cm cm long, slightly recurved backwards and sitting on the plant like spiders.

Fruits

Club-shaped red 2,5 cm long. The plant produces seed-pods twice a year, when it flowers.

Areoles

Oval, sunken. Number of areoles per rib is 5 to 6 on plants with cephalium.