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CCDB → Angiosperms → Betulaceae → Alnus → Alnus rugosa (D. Roi) Spreng.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Alnus rugosa (D. Roi) Spreng. | Alnus incana subsp. rugosa (D. Roi) R. T. Clausen | 28 | IPCN online | Love, A. & D. Love. 1982. In: IOPB chromosome number reports LXXVI. Taxon 31: 583–587. | ||
| ! | Alnus rugosa (D. Roi) Spreng. | Alnus incana subsp. rugosa (D. Roi) R. T. Clausen | 28 | Fedorov, 1974 | Woodworth 1929b 1930a, 1931 nan | ||
| ! | Alnus rugosa (D. Roi) Spreng. | Alnus incana subsp. rugosa (D. Roi) R. T. Clausen | 28 | Fedorov, 1974 | Love A. 1954b | ||
| ! | Alnus rugosa (D. Roi) Spreng. | Alnus incana subsp. rugosa (D. Roi) R. T. Clausen | 28 | Darlington, 1955 | Woodworth 1931 |