are Pleurothallis and Odontioda both types are orchids?
Pleurothallis Pleurothallis, abbreviated Pths in horticultural trade, is a genus of orchids commonly named bonnet orchids. The genus name is derived from the Greek word 'pleurothallos', meaning 'riblike branches'. This refers to the rib-like stems of many species.
Coilostylis parkinsoniana Coilostylis parkinsoniana (Parkinson's Coilostylis), formerly Epidendrum parkinsonianum, is an epiphytic species of orchid in the genus "Coilostylis", occurring in Mexico and Central America.