Xerophyte

Central Spines

One (absent on juvenile specimens) 4-15 mm long, thickened at the base, the section is cylindrical flattened in the centre.

Seeds

Pear-shaped 0,9-1,2 mm long and 0,8-1,1 mm diameter, dull black.

Roots

Napiform.

Tubercles

3-9 mm tall and 4,5-9 mm thick at the base, conical- pyramidal, at the base quadrangular and rounded edges, formed into 4 to 7 angles, and very closely arranged in a double spiral pattern (6 to 14 spirals)

Flowers

Funnelshaped, perianth segments 24-25, inner tepals 12 white with a pink to dark violet midvein, outer tepals about 24 mm long and 4-5 mm wide, lanceolate, whitish pink a reddish coffee to violet purple mid-stripe. Stamens 100-120, filaments whitish-pink 6 to 9 mm long, anthers deep yellow; style 11-13 mm long, pink with 6-7 white to yellowish stigma lobes.

Blooming Season

Winter.

Stem

5-35 mm high and 20-70 mm in diameter, solitary, sub-globose, flattened at the apex, barely protruding from the ground, green to glaucous-green (occasionally tannish- brown), with abundant wool at the apex.

Radial Spines

6 to 10 (-17 in young specimens), pectinately arranged and needle-like, 2-7 mm long, white to yellowish with dark chestnut coloured or black tips. The section is cylindrical.

Fruits

7 mm long, 5 mm wide, globose to oblong, smooth or with few small scales, green-reddish to dull green, with lateral dehiscence.

Areoles

Elongate, 2,5-3 mm long by 1-2,5 mm wide, with white wool when young becoming bare as they ages.