Guessing this little cactus is a mammillaria because of the spiral tubercules? It hasn't bloomed, so no flowers to show. I thought it would be common and so easy to find, but haven't been able to match it yet. Would appreciate any help with it's name.
It's hard to tell from the fuzzy image, but could it be M. stella-de-tacubaya ? Follow this link to see an image: http://hugo3.jalbum.net/Mammillaria%20N-Z/Mammillaria%20N-Z/slides/IMG_1711,%20west%20of%20Ceballos,%20WTH%20640,%20M.%20stella-de-tacubaya.html
It is a fuzzy pic despite using a tripod...maybe it was nervous having it's photo taken for the first time...I'll give the link a try. Thanks much for the reply.