Epidendrum calanthum is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Epidendreae, subtribe: Laeliinae,  
Genus Epidendrum   subgenus Amphiglottium  section: Schistochila   subsection: Carinata 
Infraspecific taxa recognized within Epidendrum calanthum: infraspecific taxa
This species is found in W. South America to Guyana.