Dendrobium falcorostrum is accepted species in  the family Orchidaceae  subfamily: Epidendroideae, tribe: Dendrobieae, subtribe: Dendrobiinae,  
Genus Dendrobium   section: Dendrocoryne 
Infraspecific taxa recognized within Dendrobium falcorostrum: infraspecific taxa
This species is found in SE. Queensland to CE. New South Wales.