Species Orchids?

[JennS]

So, I have been trying and trying to find a good definition of what a "species" orchid is. I mean, I know that means it is a naturally occuring orchid in nature and not a hybrid, but how can I determine which 'chids are species?

I originally thought if there was just one listed name it was a species, but don't "they" rename hybrids to also have just one name?

So...how do I know which ones are species? I really tried to figure it out for myself, but have not! Can someone provide some examples of which are species?

Also, are any of these a species? Phal. Violaceae, Trichoglottis Brachiata, or Neofinetia Falcata? Thanks to anyone who can offer any help!