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. Min Min= Star Struck x Fitzhart ( has 2 hybrid progeny ) registered: 13/11/2006 by Roper N.
Species composition summary:
fitzgeraldii 50.% hartmannii 37.5% australis 12.5%
Sarco. Min Min = Star Struck x Fitzhart = [Southern Cross x fitzgeraldii] x [hartmannii x fitzgeraldii]
Southern Cross = hartmannii x australis