Dendrobium caliculi-mentum is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Dendrobieae, subtribe: Dendrobiinae,  
Genus Dendrobium   section: Calyptrochilus 
Infraspecific taxa recognized within Dendrobium caliculi-mentum: infraspecific taxa
This species is found in Sulawesi to Solomon Is..