Are these real Orchids in my novel?

[RosieC]

In the book I am reading one of the characters is selecting from amongst his orchids for ones to display for his visiting family. There are three mentioned and it's the last I am wondering about most.

The first he picks is a phalanopsis, with pale yellow flowers... so it could be anything.

But the second is Oncidium ornithorhynchum "bearing a cloud of dancing rosy-lilac blossoms of quaint birdlike form". First I was suprised to find the orchid exists then that the description seems acurate from this picture I found through google.

ONC00252 - Oncidium ornithorhynchum

So now I suspect the author knows something about orchids or has done some research.

I can't find reference to the third though, Fujiwara Azurine 'atmosphere'. Described as having "three splendid sky-blue flowers, each nearly eighteen centemeters wide".

Those flowers sound HUGE... can there really be orchids with flowers that large!