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. Australian Idol= speciosum x Gracious Cascades registered: 22/07/2004 by Australian O.N.
ANOS judging segment: Australian (Section Dendrocoryne )
Species composition summary:
speciosum 87.5% gracilicaule 12.5%
Den. Australian Idol = speciosum x Gracious Cascades = speciosum x [speciosum x X gracillimum]
X gracillimum = gracilicaule x speciosum