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. Elegance
= Hearty x fitzgeraldii ( has 24 hybrid progeny ) registered: 10/05/2005 by Butler D.F. -o/uSpecies composition summary:
fitzgeraldii 62.5% hartmannii 31.3% ceciliae 6.3%
Detailed composition:
Sarco. Elegance = Hearty x fitzgeraldii = [Fitzhart x Pinkhart] x fitzgeraldii
Pinkhart = Lois x hartmannii = [ceciliae x hartmannii] x hartmannii
Fitzhart = hartmannii x fitzgeraldii