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CCDB → Angiosperms → Betulaceae → Betula → Betula nigra L.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Betula nigra L. | Betula nigra L. | 28, 56 | IPCN72 | VALANNE, T. 1972. Colchicine effects and colchicine-induced polyploidy in Betula. Ann. Acad. Sci. Fenn. Ser. A. 191: 1-28. | ||
| ! | Betula nigra L. | Betula nigra L. | 28 | eFlora | |||
| ! | Betula nigra L. | Betula nigra L. | 28 | Darlington, 1955 |