Mammillaria sp

To identyfi this Mammillaria, please.



Regards

JUCA

Hi,
I'm having some difficulty with this one. Counting spines isn't always a great way to be sure of identification, but these look consistent at 2 central spines, relatively short, white at base, darker tipped, and around 22 thin white radials of slightly shorter length than the centrals. Areoles are elliptical and there is wool in the axils.
Those characters would suggest such different plants as M. chionocephala, M. meyranii, M. rekoi, M. standleyi and M. apamensis. My problem is that I don't think that your plant looks anything like my plants with those names, though rekoi and standleyi are described with 4 centrals, though depending on age and how a plant is cultivated, these can vary.
Hopefully others will join in and suggest their views, from which we all can learn.
Regards
Chris

Thanks, Chris.

Regards

JUCA