Help needed to ID

Hello
I bought this plant to my wife, here in Portugal.
It could come from any were; maybe it is an hybrid.
It has 10 petals and 5 stamen, looks like a Petunia -maybe it´s a Solanaceae?
I would like to know what it is so I could take proper care .

Thank you
Pousao

 

I think that is some type of Eustoma.

 

Thank you Eric , and you are probably wright because I do remember the women
at flower center saying something like stoma. I went to all books I have looking
for sthoma, estoma, stoma, etc.
Thank you very much
Henrique Pousao