Hmm... Your mystery plant could be just about anything going off of that description. Knowing what it's leaves look like would be more of a help, plus any kind of flower would narrow things down further. But it's still young yet, it'll be interesting to see how it developes.
Classifying plants when they are small is a struggle, there isn’t any flowers, it’s way too small for that and the leaves are rounded, but honestly I think I’ll just wait and see. The books I have here are pretty informative but this one wasn’t listed, so a mystery to keep myself occupied









