are Pleurothallis and Odontioda both types are orchids?
Odontioda Odontioda is a nothogenus of hybrid orchids, for plants produced by crosses between the genera "Odontoglossum" and "Cochlioda". Typically they prefer warmer temperatures and indirect sunlight.
Oeoniella Oeoniella is a genus of flowering plants from the orchid family, Orchidaceae. It contains two known species, both native to various islands in the Indian Ocean.