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Mammillaria duoformis CACTUSPEDIA       

 


Mammillaria duoformis ML347
10km West of Huajuapan de León, 2km South-West of Santa María Xochixtlapilco, OAX-15,
Oaxaca, Mexico 1700m


Description:
Slowly clumping columnar cactus.
Stem: Cylindrical bluish green up to 10 cm tall, 3-4 cm in diameter. Tubercles without latex, but latex present in the stem. Axil with bristles.
Radial spines: 18 - 20, slender, needle-like, straight, chalky white to pale yellow above, orange brown below, 5 - 7 mm long.
Central spines: 4, pinkish tan below, blackish brown above, 8 - 12 mm long (or more), lowermost one red to blackish hooked and longer.
Flowers: Bell shaped in apical rings, bright pink to light carmine, to 15 mm long and 12 mm in diameter.
Fruits: Pale brownish pink.
Seeds: Brown.
 



 

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Family: Cactaceae (Cactus Family) 

Scientific name: Mammillaria duoformis R. T. Craig & E. Y. Dawson
In: Allan Hancock Foundation Occ. Papers 1-2:59 with plate (1948)

Origin:  Puebla, Oaxacana and Morelos, Mexico. Altitude 1.000 - 2.400 m.

Conservation status: Listed in CITES appendix 2.

Synonyms:

  • Mammillaria claviformis
  • Mammillaria duoformis var rectiformis
  • Mammillaria duaformis var xuchiapensis
  • Mammillaria erythrocalix
  • Mammillaria heeriana Bkbg. n.n.
  • Mammillaria rossiana Heinr.
  • Mammillaria hamata Lehmann ex Pfeiff. = nom. dub
  • Neomammillaria hamata
  • Cactus hamatus,(Mart.) Britton & Rose


Slowly forms multiheaded specimen, with individual stems that are somewhat elongated-globular and bears a profusion of deep carmine flowers in mid-summer.

 

Cultivation: They are easy to culture and make interesting specimens for any collection. It grows by producing offsets and  will form large clumps with time and doesn't require any special treatment, but some forms can be fast growers, while others are average in speed. It needs as much light as possible to keep the stems compact, but care must be taken to avoid sun scorch. Need a well-drained soil mix. Water well and then allows to dry thoroughly before watering again during the growing season. It doesn't like much, if any, winter water,  it can survive short exposures to freezing temperatures (-4° C.) if properly hardened off and kept dry.

Propagation: Mammillaria duoformis is best propagated from seed. Seed readily germinates at 20°-22°C, or by offsets if available.



 

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This old page has been moved! Click the link next on the right to enter the new Enciclopedia of Cacti. We hope you find this new site informative and useful.

The Encyclopedia of Cacti