Bryan,
This is very interesting because we have a plant that has exactly this bloom which we refer to as a Night Blooming Cereus. You can see my image of one in my color gallery. The image is titled "Queen of the Night" which is a popular nickname. We do know that this is not related to the orchid but a member of the cactus family. Blooms one night and has a powerful fragrance which reminds me of pure vanilla.
Frank
