What genus honors John Parkinson, Parkinsonia or Rumohra?
Rumohra Rumohra is a genus of ferns in the family Dryopteridaceae.
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.