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
Den. Limestone= bowmanii x cucumerinum ( has 2 hybrid progeny ) registered: 1/01/1985 by Skillicorn W.
ANOS judging segment: Australian (Section Rhizobium )
Species composition summary:
Den. Limestone = bowmanii x cucumerinum