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Some clones cluster aggressively and can form 50-90 cm wide white,
gorgeous mounds as they matures.
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Description: It is a highly
variable densely spined species. Some cluster aggressively and form 30
to 90cm large clumps, while other seem to stay more solitary.
Stem: Short cylindrical, light green whit latex,
up to 18 cm high and 8 cm in diameter
Spines: Spines are variable too, some plants have very short spines while others have
long white s central spines with dark tip that protrude far out from the
rest, up to 4 cm long (or more). Axil: With white wool and 10 -
20 long white bristles.
M. geminispina is a very variable species and some of the
different growing forms has been for a long
time considered separate and distinguished variety, for example:
- M. geminispina var. geminispina
(form with 2 central, white with darker tipped spines)
- M. geminispina var brevispina
(form with 2 short darker tipped central spines)
- M. geminispina var leucocentra
(form with 5-6 pure white central spines)
- M. geminispina var nivea (form
with pure white spines)
- M. geminispina var nobilis (form
with long spines)
Flower: 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. Cultivation: This is an easy to grow species, don't requires any
special treatment, but need as much light as possible without burning
the plant to encourage the heaviest spine formation. Regular water in
summer, dry in winter. Propagation: Seeds or offsets. Frost tolerance:
-2° C
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Cultivation and
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