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Mammillaria columbiana ssp yucatanensis

First description by Quehl, Monatsschr. Kakteenk. 15: 173 (1905)

Body: Clustering, with erect, cylindrical stem, to 10 - 15 cm tall, 3 - 6 cm wide.

Roots:

Sap:

Tubercule arrangement:

Tubercule:

Axil: Woolly.

Radial spine: About 20, white.

Central spine: 4, occasionally 5, yellowish- or reddish-brown, much stouter than the radials, 6 - 8 mm long.

Flower: Very small, pink.

Fruit: Red.

Seed: Brown.

Flowering period in Cultivation (Europe):

Minimum temperature: -2? C.

Habitat Substrate:

Geographic Distribution: Yucatan and Chiapas, Mexico; Honduras, Guatamala.

Comments:

Bibliography:
John Pilbeam (1999) - Mammillaria The Cactus File Handbook - page 75.
Edward F. Anderson (2001) - The Cactus Family - page 412.

Synonymes:
M. chiapensis
M. ruestii
M. yucatanensis