Xerophyte

Central Spines

Absent.

Seeds

Shortly pyriform, recurved 1.4 x 0.8 mm, brown. Hilum lateral

Tubercles

Pyramidal, dorsally flattened and distinctly angled, keeled, bluish up to 8 mm in diameter at the base, arranged in 8 and 13 spiral, with latex, axils densely woolly.

Flowers

Campanulate, whitish, to 15-30 mm long and in diameter. Outer perianth segments, lanceolate with acuminate tip, midline greenish or pinkish brown, margins ivory and hairy. Inner perianth segments to 20 mm long and 2 mm wide white to pale pink, linear with margin entire, tip acuminate. Filaments pink-white, anthers pink, stigma lobes 5-7 green-yellow.

Stem

Flattened globose, to 6 cm high, 8-10(-18) cm in diameter.

Radial Spines

4-5, rarely 6, slightly curved, unequal, needle-like, 1-2 upper ones smaller and less sub-central, the upper and lower ones whitish to brown-black, the laterals whitish with pink bases and black tips, 5 to 8 mm long. All straight, thin acicular or subulate, extended horizontally something ascending.

Fruits

Club shaped, somewhat recurved, red, to 15 mm long.

Areoles

Up to 3 mm across, woolly at first, later naked.