To confirm the registration of an Australian native hybrid & view its composition/progeny: (Database as at 1st January 2020 RHS registrations)
For non-Australian Dendrobium hybrids use the Dendrobium Hybrids checklist here
Den. Aussie Ira= Ellen x tetragonum ( has 37 hybrid progeny ) registered: 1/01/1982 by Spence P.
ANOS judging segment: Australian (Section Dendrocoryne )
Species composition summary:
Den. Aussie Ira = Ellen x tetragonum = [kingianum x tetragonum] x tetragonum