Sapling ID please

A sapling I couldn't bin, potted up a month ago, wondering what little treasure it might be.  Must have blown in or bird deposit as doesn't look like anything else we have.  Grew away happily in sandy shade.

 



And another one in full sun which is yet to be extracted,  clearly different sapling.


I don't think this is a keeper unless anyone thinks otherwise. ..

Thanks in advance.