Please help me ID this seedling

[Halekuma]

My wife and I brought some seeds from Colombia to spain last winter... Unfortunately not all seeds were identified as my wife mixed them in a hurry and put them inside her wallet before heading to airport...

Some of them sprouted in few days like inga spectabilis, others took some months like bromelia pinguin and others still don't like ceroxylon sp.

Between all sprouted seeds a new seedling emerged not similar to any others... I'm quite sure it should be a fruit tree but no idea what it is at all..

Please guys could you give any idea what could be...?

[Trava]

It is Citrus sp.

[Halekuma]

Ok thanks Trava. I think you are right. I was thinking about other tropical stuff and never though my wife would bring citrus from colombia. But she says you must be right because she wanted to bring some tasty Tahiti lime to cultivate them here. I had no idea she brought citrus seeds.

Thank you very much.