Could be an Eria like Nancy had said. But I don't think it's Eria javanica. It looks too small and the pseudobulbs are spaced to far apart from each other.
Does it have hairy roots?
I just noticed the way it grows from the surface of the potting medium - what the heck is that stuff, anyway?
hhmmm.... it really could be Eria.... I am not familiar at all with this Genus (I must admit!)... As I only know the pictures, I need to ask my friend whether the plant is fragrant and the roots are hairy...
LOL, Nancy, that was exactly my impression when I saw his plants for the first time... he grows everything in rock wool... He is, by the way, the only person I know who has success with this medium...