Genus Scaphyglottis Poepp. & Endl.

You see here 3 different Scapgyglottis-species.
The left and the right one come from Frensh Guyana, the middle one???
I grow this plants warm, bright and noty that humid. Their flower for me every year. All 3 are very nice miniatures.

Maybe some of you can help me with determination?