To confirm the registration of an Australian native hybrid & view its composition/progeny: (Database as at 1st April 2018 RHS registrations)
For non-Australian Dendrobium hybrids use the Dendrobium Hybrids checklist here
Sarco. Grace= Dove x Harmony ( has 9 hybrid progeny ) registered: 11/12/2014 by Hockey P.J. -Butler D.
Species composition summary:
Sarco. Grace = Dove x Harmony = [Melody x hartmannii] x [fitzgeraldii x Dove]
Dove = Melody x hartmannii = [Melba x fitzgeraldii] x hartmannii
Melody = Melba x fitzgeraldii = [hartmannii x falcatus] x fitzgeraldii
Melba = hartmannii x falcatus