Bryophytes of Nahanni National Park and vicinity, Northwest Territories, Canada

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Abstract
Fifty-one species of Hepaticae and 210 species of Musci, a total of 261 species of bryophytes, are reported from Nahanni National Park and vicinity, southwestern District of Mackenzie, Northwest Territories, Canada. Of those, about 89 species are new to the District of Mackenzie and 11 species are previously unreported from the Northwest Territories.Among the phytogeographically significant species present in the bryoflora are Mesoptychia sahlbergii (Lindb. & Amell) Evans, Molendoa obtusifolia Broth. & Paris, Eucladium verticillatum (Brid.) B.S.G., Scapania simmonsii Bryhn & Kaal., Bryum wrightii Sull & Lesq., Aulacomnium acuminatum (Lindb. & Amell) Kindb., Tortella arctica Crundw. & Nyholm, Didymodon johansenii (R. S. Williams) Crum, Entodon concinnus (De Not.) Paris, Ulota curvifolia (Wahlenb.) Lilj., Bryobrittonia pellucida R. S. Williams, and Andreaeobryum macrocarpum Steere & B. Murray.Hylocomium alaskanum (Lesq. & James) Austin is a name of convenience only and must be abandoned; it is merely a stunted physiological form of H. splendens (Hedw.) B.S.G. that does not merit taxonomic recognition.

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