Xerophyte

Central Spines

Sometime absent or 4, yellowish-white, to dull-red of which the lower one hooked usually less than 12 mm long and the upper 3 straight even shorter.

Seeds

Black.

Tubercles

Cylyndrical 5-10 mm long in 5 and 8 spirals, dark green, somewhat paler near the bases, cylindric, terete, with watery sap and axils almost bare or slightly felted.

Flowers

Unusually large for a Mammillaria, bell-shaped to broadly funnelform, approximately 25-40 mm long, 20-30(-40) mm in diameter uniformly, soft pink.

Blooming Season

March to May. Mammillaria stampferiSN|9239]]SN|23035]] often flowers earlier than the typical form of the species

Stem

Globular to slightly elongated, fresh green to dark green, about 3-6 cm tall and 5-9 cm in diameter.

Radial Spines

About 30 white or yellowish.

Fruits

Small, criptocarpic (remaining sunken into the body).

Areoles

Oval, with a little white felt becoming naked as they ages.