| austria | | helleborus niger | species | 28 | 0 |
| bosnia and herzegovina | | helleborus multifidus | species | 6 | 0 |
| china | | helleborus atrorubens | species | 2 | 0 |
| china | | helleborus sp. wang wei 090409 | species | 6 | 0 |
| china | | helleborus thibetanus | species | 5 | 0 |
| croatia | | helleborus croaticus | species | 8 | 0 |
| croatia | | helleborus multifidus | species | 2 | 0 |
| croatia | | helleborus multifidus subsp. multifidus | subspecies | 1 | 0 |
| croatia | | helleborus niger | species | 20 | 0 |
| croatia | | helleborus sp. mclewin k19 | species | 1 | 0 |
| croatia | | helleborus sp. mclewin wm9531 | species | 1 | 0 |
| france | | helleborus argutifolius | species | 1 | 0 |
| france | | helleborus foetidus | species | 2 | 0 |
| georgia | | helleborus orientalis | species | 2 | 0 |
| greece | | helleborus cyclophyllus | species | 2 | 0 |
| hungary | | helleborus dumetorum | species | 2 | 0 |
| hungary | | helleborus odorus | species | 2 | 0 |
| hungary | | helleborus purpurascens | species | 2 | 0 |
| italy | | helleborus foetidus | species | 4 | 0 |
| italy | | helleborus multifidus | species | 1 | 0 |
| italy | | helleborus multifidus subsp. bocconei | subspecies | 1 | 0 |
| italy | | helleborus niger | species | 28 | 0 |
| italy | | helleborus viridis | species | 1 | 0 |
| italy | | helleborus viridis subsp. viridis | subspecies | 1 | 0 |
| slovenia | | helleborus atrorubens | species | 2 | 0 |
| slovenia | | helleborus niger | species | 20 | 0 |
| slovenia | | helleborus odorus | species | 2 | 0 |
| south korea | gangwon province | helleborus multifidus | species | 1 | 0 |
| spain | | helleborus lividus | species | 2 | 0 |
| switzerland | | helleborus niger | species | 4 | 0 |
| switzerland | | helleborus sp. fl-2007 | species | 6 | 0 |
| turkey | | helleborus vesicarius | species | 2 | 0 |
| united kingdom | | helleborus foetidus | species | 3 | 0 |
| united kingdom | | helleborus viridis | species | 1 | 0 |
| united kingdom | | helleborus viridis subsp. occidentalis | subspecies | 1 | 0 |
| united states | washington | helleborus foetidus | species | 4 | 0 |