I think even if you find something close you can't be certain you've found the right thing.
What I do in that case, is give it a name of something close, but keep a marker on the tag that indicates it's a NoID. That way when I post pictures I always make clear that it's a NoID and anyone else looking to ID their plant does not use my pictures as a guide.
Take a look here at a discussion on why you can't really give definate names to ones like this.
http://www.orchidboard.com/community...noid-noid.html