When looking through the 520 "Orchid" images at Acclaim Images.com this A Catleya Orchid Plant was a favorite.
All of their pictures are hand picked, availiable in a number of formats, and you can even get custom prints and posters.

Description:
A Catleya Orchid Plant
A brightly colored magneta lucky mongkorn orchid from Thailand of the cattleya species

Some related terms for more images:
lucky mongkorn,  red,  cattleya,  paul whitehead,  plant,  orchids of thailand,  orchidae,  colourful,  magneta,  flowers,  colorful,  plants,  thai orchids,