Publication: Proc. Amer. Acad. Arts 3: 263. 1856 as Mamillaria
Description
Mammillaria heyderi subs. hemisphaerica is one of the subspecies of Mammillaria heyderi which is one of the most widespread and morphologically variable taxon. It is a flattened-globular cactus (often very flat) distinguished from the type species for having 1 central spine and 9-13 radial spines. Flowers are Cream-coloured to dusty pink.
Origin and Habitat
Nuevo León, Tamaulipas, Coahuila, México
Cultivation and Propagation
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. Needs a very good drainage with regular water in summer, dry in winter. Avoid any frost.
Propagation: Seeds, offsets (Allow cut surface to callous over before planting).
Bibliography
Major references and further lectures
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David Hunt, Nigel Taylor “The New Cactus Lexicon” DH Books, 2006
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John Pilbeam (1999) “Mammillaria The Cactus File Handbook” Nuffield Press.
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Edward F. Anderson “The Cactus Family” Timber Press, 2001
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James Cullen, Sabina G. Knees, H. Suzanne Cubey “The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass” Cambridge University Press, 11/August/2011
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