Hi everybody !
Well, i wrote from mexico because it's the place i'm actually living in, but i'm originally french, living in mexico since january 2012, and quite fond of cacti.
I don't know so much about Mammillaria because i'm not "specialized' in this genus, but i have quite a lot of them in my collection (two greenhouses in france, about 2000 plants).
I was using a lot this website to identificate plants i am seeing in the field here in mexico, but i decided to registrate, to share my pictures, spread the seeds i collect and ask for some identifications for the one i'm stuck with.
hope i'm gonna have a good time with you guys,
see you soon then, and in advance sorry for my english mystakes, i'm not english speaker :s