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  Mammillaria ignota
(Syn: Mammillaria albilanata ssp. oaxacana )
CACTUSPEDIA       

 


Mammillaria ignota
 Flat white woolly stems with showy carmine flowers.
 

Description: Usually solitary, with flat, white, woolly stems.
Stem: Depressed globose to cylindrical, sunken apically, green to dull green, covered with spines and white wool, 37(-12) cm high and 47(-8) cm in diameter. With latex.
Tubercles: Tubercles are spirally arranged, short conical to conical, firm, 8 - 10 mm long and 4-5 mm in diameter. Axil with abundant white wool.
Roots:
Fibrous.
Radial spines: 13-28, needle-like, somewhat bristly, glassy white to white, smooth, straight, somewhat radiating, horizontal, 2-8 mm long.
Central spines: (1-) 4-6, mostly 4, needle-like, firmer than the radials, the lowest is the longest, 4-10 mm long, glassy white, white to yellowish with short brown tips.
Flowers: Carmine-pink, cherry red to pink, 7 mm long, stigmas greenish.
Blooming season: From early March to June.
Fruits: Red, ripens 6-8 months after flowering, 10-20 mm long and 3-4 mm in diameter.
Seeds: Bright brown, club - shaped, 1 mm long and 0,6 mm wide and thick.
 

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Cultivation:
Water regularly in summer, but do not over-water (Rot prone).  Use a pot with good drainage and a very porous potting media. Keep dry in winter.  Feed with a high potassium fertilizer in summer.  It is quite frost resistant if kept dry, hardy as low as -5 C (some reports give it hardy to -12C).  Outside full sun or afternoon shade, inside it needs bright light, and some direct sun.

Propagation:  Sow directly after last frost.

Family: Cactaceae (Cactus Family)

Scientific name:  Mammillaria ignota Reppenhagen
In: Die gattung Mammillaria nach dem heutigen stand meines wissens 1987; 126 - 128.First description

Origin: Mexico, Oaxacana and Puebla, Mexico. Altitude 700 to 2.400 m.

Habitat:  On limestone rocks, in humus soil between spare overgrowth.

Conservation status: Listed in CITES appendix 2.

Synonyms:  

  • Mammillaria albilanata ssp. oaxacana D.R. Hunt
  • Mammillaria albilanata
  • Mammillaria lanigera
  • Mammillaria lanigera var juxtlahuacensis
  • Mammillaria monticola
  • Mammillaria noureddineana
     


Short straight white spines tipped with brown cover the plant body.

 

 



 

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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.

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