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.
Odontonema Odontonema, the toothedthreads, is a genus of flowering plants in the bear's breeches family, Acanthaceae. It is native to Central America.