two mammillarias....

m.hahniana for long bristles in the axils, but.....





no bristles in the axils....
series supertextae..
mammillaria....

I find that some of the Supertextae species are so variable that unless you know where the plant comes from it is very difficult to identify. Its probably one of the many forms of M. haageana. M flavicentra is just a bit different, and M. albilanata oaxacana plants usually have a lot more wool, especially at the top, though that develops with age. M. dixanthocentron flowers are usually lighter.

BUT........???

but...
series supertextae (hunt) is the best we can write....