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. Yvonne= Judith x Cherie ( has 2 hybrid progeny ) registered: 20/11/2003 by Roper N.
Species composition summary:
fitzgeraldii 50.% hartmannii 37.5% falcatus 12.5%
Sarco. Yvonne = Judith x Cherie = [Melba x Fitzhart] x [Fitzhart x fitzgeraldii]
Fitzhart = hartmannii x fitzgeraldii
Melba = hartmannii x falcatus