Grammatophyllum martae - I'm not sure we should include this one. It gets HUGE!
IOSPE PHOTOS
Found in the Philippines at elevations of sealevel to 300 meters as a large sized, hot growing epiphyte with large, slightly flattened pseudobulbs carrying up to 4, oblanceolate, leathery, 24" [60 cm] long leaves that blooms in the spring on a basal, stout, many [80] flowered, 5' [1.5 m] long inflorescence.
And as much as I love Den amethystoglossum, it gets pretty big. Mine is 2 1/2' tall and is considered a young plant. I'll leave to the majority though. Truly Intermediate and can take cool.
IOSPE PHOTOS
I had some trouble locating vendors, but I am pretty sure you can get it from Windy Hill and they are available around on eBay.
Clown Alley: $35