Xerophyte

Central Spines

2 (to 6) pure white or white with dark tip that protrude far out from the rest, straight or slightly curved, 0,5 to 4 cm long (or more).

Seeds

Brown.

Description

Mammillaria geminispinaSN|14012]]SN|14012]] is a highly variable densely spined species. Some cluster aggressively and form 30 to 90 cm large clumps that appear white, while other seem to stay more solitary.

Tubercles

Rounded with latex. The axil is filled by white wool and 10 - 20 long white bristles.

Flowers

Campanulate, pinkish to carmine red, with darker midveins, to 20 mm long and in diameter usually in a ring in the growth of the previous year but sometime more randomly over the body. If grown from seed, M. geminispina can take seven to eight years before flowering.

Spines

Spines are variable too, some plants have very short while others have long spines.

Stem

Short cylindrical, light green whit latex, up to 18 cm high and 8 cm in diameter.

Radial Spines

16 to 20 chalky white, interlacing up to 7 mm long.

Fruits

Red