Blue Orchids

I made an interesting discovery yesterday while looking at orchids on www.orchidspecies.com

Previously, I thought there was no such a thing as an orchid that was truly blue (as you may have seen, most Vandas they call blue are, in actuality, varying shades of violet).

I learned of the genus Thelymitra, which has many species that are very very blue, much to my suprise and delight. They're terrestrial, and the vast majority of them are Australian. They look rather a lot like Delphinium or Tricyrtis. (Both are species I am also fond of, though not to the point of insanity obsession, as with orchids.)

I have yet to finish going through every single entry on orchidspecies.com, does anyone know of any other orchid genera that have blue species?

x-posted