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. Cosmic Gold= Avril's Gold x speciosum ( has 5 hybrid progeny ) registered: 10/11/2009 by Butler D.F.
ANOS judging segment: Australian (Section Dendrocoryne )
Species composition summary:
Den. Cosmic Gold = Avril's Gold x speciosum = [Aussie Child x speciosum] x speciosum
Aussie Spectrum = Peter x speciosum = [fleckeri x falcorostrum] x speciosum
Aussie Child = Hilda Poxon x Aussie Spectrum = [speciosum x tetragonum] x Aussie Spectrum