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
Den. Elegant Heart= Suzanne x speciosum ( has 29 hybrid progeny ) registered: 1/01/1986 by Upton W.T.
ANOS judging segment: Australian (Section Dendrocoryne / Phalaenanthe )
Species composition summary:
Den. Elegant Heart = Suzanne x speciosum = [bigibbum x tetragonum] x speciosum