Glyceria grandis S. Watson var. grandis . American Mannagrass. Phen: Jul. Hab: Wet, mucky soils of open wetlands. Dist: NS west to AK, south to VA, IA, NM, and OR. Attributed to w. NC by Tucker (1996) and to Haywood County, NC (Kartesz 2022).

Origin/Endemic status: Native

Synonymy: = FNA24, K1, K3, K4, NE, NY, Va; = Glyceria maxima (Hartm.) Holmb. ssp. grandis (S.Watson) Hultén; = n/a – RAB; = Panicularia grandis (S.Watson) Nash – S; < Glyceria grandis S.Watson – C, F, G, GW1, HC, Il, Mi, Pa, WV, Tucker (1996)

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