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 marksiana  "YELLOW" CACTUSPEDIA       

 


Mammillaria marksiana "YELLOW".
This species has a natural tendency to develop a yellowish colouring of the stem (especially in bright sun), but  some selected specimens - though grown on their own root -  will turn into a shocking yellow colour .
The best of them are rare and highly estimated by collectors.

 

Description: Mammillaria marksiana is solitary at first, later forming clumps.
Stem: Flattened globose, normally light green, becoming yellowish in bright light (occasionally some specimens have a bright yellow colour).  In the wild it can grow up to 6-10 cm high, 5-12 cm in diameter; however in cultivation it can double in size. Milky sap present.
Tubercle arrangement
: With (usually) eight right-winding and 13 left-winding visible contact parastichies.
Tubercles: Pyramidal, weakly four-sided .Axil: With lots of snow-white wool, particularly in the blooming area.
Spines: Thin, needle-like, golden yellow to brown, difficult to distinguish as centrals and radials, very variable in number, even within the areoles of the same plant, generally 3 to 8 mm long, depending on age and origin, younger plants have more spines (7-13), older ones have less (2-5)
Flowers: Diurnal, bright greenish yellow, 15 mm long and in diameter. The flowers form in a ring pattern on the previous year’s growth.
Blooming season: Late winter to early spring.
Fruits: Club shaped, greenish or  purplish red, up to 20 mm long, ripening in summer.
Seeds: Small, brown.

Cultivation: An easy and easily flowering species, but not a fast grower, that may make clumps given the best conditions.  Some plants will offset, and moderately large sized clumps can be produced in a few years.
Water regularly in summer, but do not overwater (rot prone).  It shouldn't be watered from above as it would ruin the fine wool. Use a pot with good drainage and a very porous potting media.  Keep dry in winter.  Feed with a high potassium fertilizer  in summer.  Avoid frost.  Reputedly sensitive to low temperatures, but less so if kept on the dry side prior to, and during, cold weather. Outside afternoon shade, inside it needs bright light, and some direct sun. Tends to get yellowish in strong light, which encourages flowering and heavy wool and spine production.
 

Propagation: Division, direct sow after last frost.

 


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

Photo gallery MAMMILLARIA

Family: Cactaceae (Cactus Family)

Scientific name: Mammillaria marksiana Krainz, cv. Yellow
 
Origin
:  Southern Sonora, Durango and Sinaloa, Mexico. Altitude 400 - 2.000 m.

Habitat: This species is quite rare in nature and generally grows under the protection of nurse plants.

Conservation status: Listed in CITES appendix 2.

Common Names include: Cabeza de Viejo

Synonyms:  

  • Neomammillaria marksiana


This plant is a great example of symmetry, the spirally arranged prominent tubercles form a clear wheel-like pattern on the flattened light green body, that seems to be moving when you stare at it.
The white woolly axils help guide the eye to its spiral shape.
 

 




 

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