Xerophyte

Central Spines

Almost always one, (0-)1(-4) up to 1,7 cm long, yellowish to reddish, spreading, 1 hooked, while the second central spine(s) – if present - are straight.

Seeds

1.2-1,4 mm large, black.

Description

Usually solitary

Tubercles

Conical, soft, flaccid and pliable, rounded apically, dull blue-green, 1-2,5 cm tall, basal diameter 0,7-1,2 cm, axils naked.

Flowers

Unlike most mammillarias, this cactus bears large funnel-shaped flowers up to 4 cm in diameter, white with pink mid-veins. Pericarpel green 3-5 mm long, tepals lanceolate, filaments whitish to pinkish-green, style pinkish-green up to 2 cm long, stigma lobes 6-10 greenish.

Blooming Season

March to May

Stem

Flattened-globose, apex depressed, 1,5 to 8 cm tall and 4-10 cm in diameter. The juice is watery (latex absent).

Radial Spines

10-18(-24) slender white 0,8-1,6 cm long straight silky and slightly pubescent.

Fruits

up to 2,2 mm long, club-shaped red. The fruits are juicy.

Areoles

1,5-2 mm in diameter circular to elongated