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CCDB → Bryophytes → Polytrichaceae → Polytrichastrum → Polytrichum norwegicum Hedw.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Polytrichum norwegicum Hedw. | Polytrichastrum alpinum var. septentrionale (Brid.) G. L. Sm. | 14 | 28 | Cave1963 | Stefureac 1957 |