Need help to id this Mammillaria

https://i.servimg.com/u/f32/16/42/15/31/mammil14.jpg
I have had this Mammillaria for many years now but all the id that i have found on this plant in one way or another just do,s not match
Cheers Arthur

HI,
What a lovely plant!

I've looked at your plant, and my first thought was that it may be a form of Mammillaria formosa. This is a very variable species, so often photos in books or on the web don't look the same. You just have to look at M. formosa in Maurillio's Mammillarias A to Z in the Photo Section to see how much variation there is.

My second possibility is M. saetigera, which is what the Germans call the plant that I know as M. hahniana,especially ssp woodsii, having decided that M. hahniana with long hair is actually a form of M. klissingiana.

My third possibility is Mammillaria albilanata ssp. oaxacana, but I think that is a long shot.

So, not a conclusive identification from me, but I am tending towards M. formosa.

Thank you chris for taking the time to answer my question i thought it may have been Mammillaria hahniana subsp woodsii but it is nice to have a second opinion and the other as a guide to look out side of the box

Hi Arthur, I'm going with Chris's third choice Albilanata subsp. Oaxacana. I acquired a similar sized plant recently via Bill Maddams, from a friend of his. Bill hadn't the space for it and kindly offered it to me. Mine is the spitting image of your plant and Bill confidently said it was M. Albilanata. Derek.