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. Snowhart
= Cherie Snow x hartmannii ( has 22 hybrid progeny ) registered: 5/11/1998 by Roper N.Species composition summary:
hartmannii 81.3% fitzgeraldii 18.8%
Detailed composition:
Sarco. Snowhart = Cherie Snow x hartmannii = [Cherie x hartmannii] x hartmannii
Cherie = Fitzhart x fitzgeraldii = [hartmannii x fitzgeraldii] x fitzgeraldii