Cactuspedia home | E-mail | Photo gallery | Dictionary | Search 

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

  Mammillaria glassii var. ascensionis CACTUSPEDIA       

 


 M. glassii var. ascensionis offsets heavily, and forms a beautiful low white cushion.
Pink flowers bloom in late winter.

 

Description:  It is a small plant that forms low clusters. Individual  stems are globose.
Stem: Globular 40-50 mm in diameter, becoming cylindrical, to 10 cm high. Without latex
Tubercles: Cylindrical with usually short white hairs  and about 3-8 hairlike bristles in the axil up to 3-15 mm long.
Central spines: 1 longer erect, straight or hooked, 5-7 mm long, white, brown on the tip, and 4 to 7 straight, 4-6 mm long, more or less orderly, dispersing to the sides, while difficult to distinguish from radials.
Radial spines: 50-75, 4-14 mm long, , interlacing, hairlike, white.
Flowers: Often not opening completely, white, with a pink nuance, usually 16-18 X 18-22 mm
Fruits: 15-17 X 3-5 mm, greenish- white to  pale pinkish-olive. Ripens about 3 months after flowering
Seeds: Pear-shaped, 1.2 X 1.0 mm, black.
Remarks: Vaguely resembles Mammillaria prolifera; Glass and Foster consider it simply a variety of Mammillaria glassii.

Cultivation: Of easy culture and recommended for any collection, it doesn't requires any special treatment.  It readily forms clumps of many small heads. It needs as much light as possible without burning the plant, to encourage the heaviest spine formation.  Growth and flowering are improved under these conditions. Use very gritty potting mix (rot prone) For best results, use a shallow pot,  and only use the smallest diameter pot that will accommodate the plant. Regular water in summer, dry in winter. The use of a covering gravel is a good way to preserve the whiteness of spines. Frost tolerance -6° C.  
Reproduction:
Seeds or offsets.
 

Photo of conspecific taxa, varieties, forms and cultivars of Mammillaria glassi:

 

 

Photo gallery: Alphabetical listing of Cactus and Succulent pictures published in this site.

Photo gallery MAMMILLARIA

Family: Cactaceae (Cactus Family)
 

Scientific name:  Mammillaria glassii var. ascensionis (Reppenhagen) Glass & Foster
in CSJA 51: 126 (1979).

Taxonomy: Series: STYLOTHELAE

Origin:  Mexico (Nuevo León)

Habitat: Grows in moss on limestone mountains near Ascension, 2400 - 2.750 m.

Conservation status: Listed in CITES appendix 2.

Common Names include:

Synonyms:

  • Mammillaria ascensionis Reppenhagen
    First description by Reppenhagen, Kakt. and Sukk. 30(3): 61-62 (1979)
  • Mammillaria glassi ssp ascensionis
  • Bartschella glassii ssp. ascensionis
  • Mammillaria ascensionis var nominis-dulcis
  • Mammillaria glassii var siberiensis

Bibliography: John Pilbeam (1999) - Mammillaria The Cactus File Handbook - page 111. Edward F. Anderson (2001) - The Cactus Family - page 419


 

 


 



 

Cactuspedia home | E-mail | Photo gallery | Dictionary | Search 

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