Dendrobium tetragonum is a species in the Dendrobium genus.
.
This name is accepted name for the species in
the family
Orchidaceae
subfamily
Epidendroideae,
tribe
Dendrobieae,
subtribe
Dendrobiinae,
and under infraspecific classification, it is in the
section:
Dendrocoryne
. This species is found in E. Australia.