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CCDB → Angiosperms → Ranunculaceae → Helleborus → Helleborus niger L.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Helleborus niger L. | Helleborus niger L. | 32 | CHROBASE | D'AMATO G., BIANCHI G. - 1989. Heterochromatin and Ag-NOR staining in some species of Helleborus (Ranunculaceae).. Caryologia , 42(1): 19-26. | |||
| Helleborus niger L. | Helleborus niger L. | 32 | CHROBASE | D'AMATO G., BIANCHI G. - 1989. Heterochromatin and Ag-NOR staining in some species of Helleborus (Ranunculaceae).. Caryologia , 42(1): 19-26. | |||
| Helleborus niger L. | Helleborus niger L. | 32 | IPCN online | Druskovic, B. & M. Lovka. 1995. IOPB chromosome data 9. Int. Organ. Pl. Biosyst. Newslett. (Zurich) 24: 15–19. | |||
| Helleborus niger L. | Helleborus niger L. | 16 | IPCN online | Niklas, L. 2000. In C. Dobea & E.Vitek, Documented Chromosome Number Checklist of Ausrian Vascular Plants. Verlag des Naturhistorischen Museums Wien, Vienna. | |||
| ! | Helleborus niger L. | Helleborus niger L. | 32 | IPCN67-71 | LOVKA, M., F. SUSNIK, A. LOEVE, & D. LOEVE. 1971. In IOPB chromosome number reports XXXIV. Taxon 20: 785-797:- | ||
| Helleborus niger L. | Helleborus niger L. | 32 | Fedorov, 1974 | Langlet 1927a, 1932 | |||
| Helleborus niger L. | Helleborus niger L. | 32 | Fedorov, 1974 | Kurita 1956b | |||
| ! | Helleborus niger L. | Helleborus niger L. | 32 | C-values database | Temsch EM, Temsch W, Ehrendorfer-Schratt L, Greilhuber J. 2010. Heavy metal pollution, selection, and genome size: The species of the Žerjav study revisited with flow cytometry. Journal of Botany 2010: Article ID 596542, 11 pages. | ||
| Helleborus niger L. | Helleborus niger L. | 32 | Cave1959 | Kurita 1958b |