Cactus geminispinus
Revis. Gen. Pl. 1: 260. 1891 [5 Nov 1891] Remarks: nom. nov. for Mammillaria geminispina Haw. non DC.
Family
Cactaceae
Genus
Species
Cactus geminispinus
Author
(Haw.) Kuntze
Chinese genus
-
Chinese name
-
Primary
Accepted
DescriptionEdit description
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