Dendrobium cuneilabium is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Dendrobieae, subtribe: Dendrobiinae,  
Genus Dendrobium   section: Cadetia   subsection: Sarcocadetia 
Infraspecific taxa recognized within Dendrobium cuneilabium: infraspecific taxa
This species is found in Papua New Guinea.