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. Wizz Fizz= Fitzhart x Zoe ( has 3 hybrid progeny ) registered: 1/06/2015 by Hanging Garden -Butler D.F.
Species composition summary:
Sarco. Wizz Fizz = Fitzhart x Zoe = [hartmannii x fitzgeraldii] x [Cherie Snow x Heidi]
Heidi = Fitzhart x hartmannii = [hartmannii x fitzgeraldii] x hartmannii
Cherie Snow = Cherie x hartmannii = [Fitzhart x fitzgeraldii] x hartmannii
Fitzhart = hartmannii x fitzgeraldii