Xerophyte

Seeds

Black.

Description

it is a small cactus, usually solitary, globular or cylindrical (clusters of stems can be seen in cultivation)

Spines

60-80 radial spines (less than in M. herrerae which has 100 or more), white, fine and interlacing. No central spines.

Stem

Somewhat cylindrical, slender, about 2 cm wide and 5-7 cm high, obscured by the spines. Stem and tubercles without latex. The axil is naked.

Fruits

Whitish, retained within the spines, but not within the plant body. (see