Help me identify this indoor plant

Any ideas on what this plant could be? I found it growing in a glass house, in partial sun. It is growing in the gravel under a bench. The leaves were completely green when I first found it. Thanks for any information.

 

It looks like it has flower buds - when those open, the ID will be much easier. Right now, I'm leaning towards Chrysothemis or something from that family, but flowers will prove/disprove that.

 

Hm, are those brownish somethings flowers??? If yes, then it is a Dorstenia sp. :)

 

Thanks so much for your help, I would've been clueless without it. Definately a Dorstenia, the pictures I looked up under that name are exactly like the plant. THANKS!!! X A MILLION!!!!!