Pleurothallis nelsonii Ames Pleurothallis nelsonii Ames in Schedul. Orchid. 4: 22-23. 1923 sec. Soto-Arenas & al. 2007=Pleurothallis microchila L.O. Williams in Fieldiana, Bot. 31(10): 259-260. 1967 syn. sec. Soto-Arenas & al. 2007