Please help me to identify this cactus. It seems to be a Gymno.
Thanks

This Mammillaria has flowered today. Please help me identify it. Thank you.

Thanks george

I think is a Echinopsis. Please help me.

It could be a Echinopsis atacamensis?

It coult be a Mammillaria guillaiminiana?

I think is a Mammillaria. It has a beautiful flower.

Thanks. It is a Mammillaria vetula ssp. gracilis

Is this a Mammilaria elongata ?. I appreciate your comments.

Dear sir
Thank you for your comments and above all for your advice. We will keep them in mind.

Dear Aiko First, I find your comment somewhat insolent. I am a beginner (start on August) and I have many many questions about cactus. Even if you do not believe it I try to identify the species but it's still confusing for me and I just try to check, humbly. Second, if my ID requests bother you, ju...

Please indicate name of this cactus. Thanks

¿Succu?

7george: it´s from Con Con, near Valparaiso, Chile
greenknight: H=16 cm; D=17 cm

This cactus is a.....
Thanks