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Mammillaria heyderi ssp macdougalii

  • First description by Rose ex Bailey, Standard Cycl. Hort. 1982 (1916) – as M. macdougalii

  • Body: Plants solitary. Stems flattened globular, up to 12 – 15 cm in diameter.
  • Roots:
  • Sap:
  • Tubercule arrangement:
  • Tubercule:
  • Axil: With long white wool.
  • Radial spine: 10 – 12, white or slightly yellowish, to 2 cm long, the lower stronger, brown or black at the tips.
  • Central spine: 1 or 2, stout, yellowish, brown tipped, to 10 mm long, similar to the radials.
  • Flower: Large, nearly 3 cm long and wide, cream coloured or pale yellow with a faint tan midstripe.
  • Fruit: Red.
  • Seed: Dark brown.
  • Flowering period in Cultivation (Europe):
  • Minimum temperature:
  • Habitat Substrate: Desert grassland.
  • Geographic Distribution: Arizona, USA; Sonora, Mexico. Altitude 850 – 1.800 m.
  • Comments:
  • Bibliography:
    John Pilbeam (1999) – Mammillaria The Cactus File Handbook – page 140.

    Edward F. Anderson (2001) – The Cactus Family – page 423.
  • Synonymes:
    M. macdougalii

Pictures

Picture in the galery related to the keyword :

macdougalii


Mammillaria Heyderi/Mammillaria heyderi ssp macdougalii – Photo Hugo De Cock 1.jpg


Mammillaria Heyderi/Mammillaria heyderi ssp macdougalii – Photo Hugo de Cock.jpg


Maps Distribution/Mammillaria heyderi ssp macdougalii – distribution map.gif