Calamagrostis canadensis (Michaux) Palisot de Beauvois var. macouniana (Vasey) Stebbins. Hab: Bottomlands. Dist: NL (Newfoundland) and AB south to NJ, PA, VA?, OH, w. KY, IL, MO, NE, WY, OR. Reported for VA (FNA), the documentation unknown. Reported south to NJ and KY only (Kartesz 1999). {investigate}

Origin/Endemic status: Native

Synonymy: = F, FNA24, G, HC, Il, K1, K3, NE, Pa; = Calamagrostis macouniana (Vasey) Vasey; < Calamagrostis canadensis (Michx.) P.Beauv. – C, Mi, Tucker (1996); < Calamagrostis canadensis (Michx.) P.Beauv. var. canadensis – K4

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
• Great Plains: FACW (taxonomic split from wetland indicator species)
• Midwest: OBL (taxonomic split from wetland indicator species)
• Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily: 7