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. Pinkhart
= Lois x hartmannii ( has 10 hybrid progeny ) registered: 1/01/1983 by Russell K.Species composition summary:
hartmannii 75.% ceciliae 25.%
Detailed composition:
Sarco. Pinkhart = Lois x hartmannii = [ceciliae x hartmannii] x hartmannii