Jim, as per Kew, Spathoglottis x parsonsii is a natural hybrid of S. plicata × S. vanoverbergii.
What Jim said - quite a few Orchids which we grow in pots, do grow in the ground in nature. We just about stepped on thick mats of Orchids in Ecuador, they were impossible to avoid at times. ( some Lycaste, Maxillarias, certain Pleurothallids too as example)
