Entering this thread late...

I have a Platystele oxyglossa that has been in constant bloom since I
bought it last February. It currently has about 14 inflorescences and
is showing no signs of letting up.

I have a picture at
http://www.mxd120.com/mxd120/orchids...glossa-400.jpg

It doesn't show the whole plant, though. I think I may enter in the
Philly Flower Show this year.

I grow mine under lights, and it is often shaded by the bigger plants,
so I think it may do well on a windowsill.

--Matt