I got this plant as present from seed. I was told its Argyreia Nervosa climbing wine,but I think its not,its big mistery for me.
This her second year growin in large pot,stem have bark with small whitish dots,leafs are kind of sharp like Hazelnut,didnt had any flowers yet. During winter monts plant was in hibernation. Looking forward solving this mistery. Best regards

Yes this one is very tricky. However, in a spark of luck I managed to find this Beaked Hazelnut (Corylus cornuta)

Can't say for certain this is it but that's all I could find. It's native to most of north America, so it wouldn't be a surprise the seeds would get mixed up.

The leaves look like Hazelnut but Argyreia is a member of the Morning Glory family. The OP said it was supposed to be a vine (but its not looking too vine like). So, perhaps the orginal ID was wrong. I will go thing about all this. ...