Pleurothallis gargantua is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Epidendreae, subtribe: Pleurothallidinae,  
Genus Pleurothallis   subgenus Pleurothallis
Infraspecific taxa recognized within Pleurothallis gargantua: infraspecific taxa
This species is found in Ecuador (Carchi).