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. Hearty
= Fitzhart x Pinkhart ( has 1 hybrid progeny ) registered: 10/05/2005 by Butler D.F. -o/uSpecies composition summary:
hartmannii 62.5% fitzgeraldii 25.% ceciliae 12.5%
Detailed composition:
Sarco. Hearty = Fitzhart x Pinkhart = [hartmannii x fitzgeraldii] x [Lois x hartmannii]
Lois = ceciliae x hartmannii