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
Sarco. Redstone
= Cherie x Elizabeth ( has 3 hybrid progeny ) registered: 19/10/1995 by Wilson KevinSpecies composition summary:
fitzgeraldii 62.5% hartmannii 25.% ceciliae 12.5%
Detailed composition:
Sarco. Redstone = Cherie x Elizabeth = [Fitzhart x fitzgeraldii] x [Lois x fitzgeraldii]
Lois = ceciliae x hartmannii
Fitzhart = hartmannii x fitzgeraldii