The orchid Dendrobium Australian Black and Green-tetragonum is a hybrid . This orchid hybrid lacks official registration. The name is an internal designation created within the orchidroots system.
Top three species ancestors and their influences are

• Dendrobium tetragonum (66.80%)  section: Dendrocoryne 
• Dendrobium kingianum (21.48%)  section: Dendrocoryne 
• Dendrobium speciosum (6.25%)