There are some great photo's at that site Lee Anne, thanks for the link ... looking at all of those beauties makes me want to grow Gesneriads again!
I thought it might be Sinningia harleyi:
http://www.gesneriads.ca/sinni... but the flower is definitely different and after comparing a lot of photo's I'm not convinced it's Sinningia. The flower in Myriam's photo has more of a bell shape. I think it's definitely a Gesneriad, I'm just not sure which one.