To confirm the registration of an Australian native hybrid & view its composition/progeny: (Database as at 1st April 2018 RHS registrations)
For non-Australian Dendrobium hybrids use the Dendrobium Hybrids checklist here .
Sarco. Parma= Topaz x Roberta ( has 9 hybrid progeny ) registered: 12/11/2012 by Roper N.
Sarco. Parma ‘Lemon Drop’ HCC-ACM/AOC 2015