All the information and photos in cactus art files are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.

Mammillaria marcosii

Mammillaria  marcosii is a small clumping plant with a wide range of thorn colours
This is one of  the best colour form with white radials and bright yellow central spines.

Description:  It forms irregular clumps of low round to short cylindrical stems up to 5 cm in diameter. Tubercle are soft, cylindrical, with round tips. In the axil there are wool and up to 15 bristles to 15 mm long.
Spines: Radials: 16 - 25, radiating, needle-like shining white, 4 - 12 mm long. Centrals: 7 - 14, mostly needle-like,  yellow , 10 - 20 mm long one of which is descending and slightly hooked, all other straight.
Flower: Yellowish white with pinkish tint up to 10 mm in diameter.
Fruit: Red, 6 - 13 mm long, not arising above the spines.

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Family: Cactaceae (Cactus Family) 

Scientific Name: Mammillaria marcosii W.A.Fitz Maur., B.Fitz Maur. & Glass 1997
Published in:Cactus and Succulent Journal (U.S.).   69(1): 10-14 (1997)

Origin: Guanajuato (Municipio Atarjea), Mexico. Altitude 1.400 m.

Habitat:  Grows on volcanic rocks.
 

Photo of conspecific taxa, varieties, forms and cultivars of Mammillaria marcosii.

• Mammillaria marcosii
• Mammillaria marcosii "YELLOW SPINE"

All the information and photos in cactus art files are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.