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. Avril's Gold= Aussie Child x speciosum ( has 19 hybrid progeny ) registered: 7/08/1998 by Clement R. -Hill R.
ANOS judging segment: Australian (Section Dendrocoryne ) Den. Avril's Gold 'Jarrah' AM/ANOS 2014
Species composition summary:
Den. Avril's Gold = Aussie Child x speciosum = [Hilda Poxon x Aussie Spectrum] x speciosum
Aussie Spectrum = Peter x speciosum = [fleckeri x falcorostrum] x speciosum
Hilda Poxon = speciosum x tetragonum