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. Perky = hartmannii x spathulatus Registration: 1972 by Butler I.A.
fitzgeraldii = Selwyn 1987 Whitcombe I.E.
Fitzhart = Carnival 1998 Clement R. -Batchelor S.
Fizzy Dove = Perky Dove 2017 Morris J.G. -Fagg L.
hartmannii = Topaz 2002 Russell K.
hirticalcar = Janice 2013 Fitzsimmons C.W.