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.

Flowers large 3-4cm in diameter, purplish pink, in summer, with long narrow spreading stigmata, showy, nearly as large as the plant bodies.
 

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Conservation status: Listed in CITES appendix 2.

M. boolii was once placed in the segregate genus Bartschella because of its fruit anatomy and large pink flowers located at the top of the plant. The fruit are red, thin-skinned  and often break off from a basal pore rather than falling whole (like in most Mammillaria).
 

Description: Clumping plants with  soft, green or grey-green epidermis. Stems up to 5cm wide, with prominent rounded tubercles usually depressed globose to depressed conical when growing in habitat. While cultivated plant have (frequently) oblong offsetting stems.
This plant is somewhat difficult to cultivate. Needs good drainage as it is rot prone.

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.