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.
Orthoceras (plant) Orthoceras is a genus of orchids native to Australia, New Zealand and New Caledonia. Two species are known: