Monographs Details: Polytrichastrum alpinum var. septentrionale (Brid.) G.L.Sm.
Authority: Smith, Gary L. 1971. Conspectus of the genera of Polytrichaceae. Mem. New York Bot. Gard. 21: 1-83.
Family:Polytrichaceae
Discussion:

Polytrichum septentrionale [Sw., Muse. Suec. 77, 107. t. 9. f. 18. 1799.] Brid., Jour. Schrad. 1800(1): 285. 1801.

Polytrichum norwegicum Hedw., Sp. Muse. 99. t. 22. f. 1-4. 1801.

Polytrichum oederi [Brid., Muse. Recent. 2(1): 99. 1798.] Beauv., Mag. Encvc. 9 Ann. 5: 330. 1804.