Cypripedium Ulla Silkens (Cypripedium flavum × Cypripedium reginae)

The orchid Cypripedium Ulla Silkens is a hybrid in the Cypripedium genus. registered with the Royal Horticultural Society by S.Malmgren in 1996. It is originated by J.Petersen Registered parents are Cypripedium flavum × Cypripedium reginae. The key influencing species of this hybrid are Cypripedium flavum (50.00% section: Cypripedium subsection: Obtusipetala ) Cypripedium reginae (50.00% section: Cypripedium subsection: Obtusipetala ) listed in order of their genetic contribution.