Helleborus x ashwoodensis – H. niger x H. versicarius/ 2002 as 'Briar Rose'
Helleborus x ballardiae – H. lividus x H. niger (mostly sterile)
Helleborus x belcheri – H. niger x H. thibetanus
Helleborus x ericsmithii – H. x sternii (argutifolius x lividus) x niger (mostly sterile)
Helleborus x hybridus – crosses involving H. atrorubens, H. dumetorum, H. orientalis, H. purpurascens, H. multifidus, H. viridis (mostly fertile)
Helleborus x glandorfensis= H. x ericsmithii (niger x sternii) x H. x hybridus
Helleborus x iburgensis – H. x ballardiae (lividus x niger) x H. x hybridus
Helleborus x lemonnierae – H. x hybridus x H. niger
Helleborus x lemperii=Helleborus x hybridus x Helleborus niger
Helleborus x nigercors – H. argutifolius x H. niger
Helleborus x sahinii - H. foetidus x niger
Helleborus x sternii – H. argutifolius x H. lividus
These interspecific crosses have been made, but as yet are unnamed as a group:
H. x hybridus x thibetanus – represented by the clone. Helleborus 'Yoshino'
H. argutifolius x foetidus
H. niger x hybridus – represented by the clone Helleborus 'Snow White'
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