No idea. Help please!

[tacrolimus]

Good Morning all.
Could you suggest me how to classify this little cactus?
I can not even understand which genus it belongs to.

Thank you
Luigi

[savant]

Could well be Gymnocalyceum horstii but I'm no expert.
It also looks a bit black on the top but that might change to green.

[adetheproducer]

Echinocereus knippelianus I think, one of my must haves.

[DaveW]

Agree with Ade. It should flower at that size too. My seedlings flowered just over two years from seed in the 2 inch pot they were set in. This shot of mine was when it was just a bit older:-

knippelianus2.jpg (60.8 KiB) Viewed 883 times

[Eutow_Intermedium]

Yes , as soon as I sw it I thought E. Knippelianus

=^_^=

*nods*

[tacrolimus]

Thanks a lot.

Regards
Luigi