Help needed to ID this plant.

[erna]

I purchased this plant from a friend who was giving up on her collection. I knew that the Tag was lost but I bought it anyway beacuse it is so pretty. She remembers that it had "chocolate drop' in its cross.
The flowers are not nearly as dark as 'Choc. Drop' they are pinkish/orange. The plant is bi-foliate.
Any help with the Genus and or Grex would be appreciated.
Cheers

I know that it is not C Choc. Drop, But has this somewhere in the Hybrid.