Mammillaria evermanniana
First description by Britton & Rose, Cact. 4: 97, with fig. (1923) - as Neomammillaria.
Body: Plants usually solitary. Stems globose to short and thick cylindrical, light green, 5 - 7 cm (2 - 2.8 in) in diameter.
Roots:
Sap: With latex.
Tubercule arrangement:
Tubercule: Conical.
Axil: Densely woolly and bristly, especially at first.
Radial spine: 12 - 15, thin, needle-like, white with dark tips, 8 - 10 mm (0.3 - 0.4 in) long.
Central spine: 3, erect or nearly so, white with dark tips, to 10 mm (0.4 in) long.
Flower: Yellowish cream with greenish tint, with pinkish brown midveins, to 10 mm (0.4 in) long and in diameter.
Fruit: Red.
Seed: Brown.
Flowering period in Cultivation (Europe):
Minimum temperature: -2? C.
Habitat Substrate:
Geographic Distribution: Cerralvo Island, Sea of Cortez, Mexico.
Comments: Care with low temperatures is the most critical growing requirement of this species, but high intensity of light is needed to stimulate flowering. White wool will become quite heavy with time under good growing conditions.
Bibliography:
John Pilbeam (1999) - Mammillaria The Cactus File Handbook - page 99.
Edward F. Anderson (2001) - The Cactus Family - page 417.
Synonymes:
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Photos containing "evermanniana" in caption, comment or name.
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