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Lythrum alatum Pursh. Northern Winged Loosestrife. Phen: Jun-Sep. Hab: Calcareous meadows, marl fens, and disturbed wet calcareous places. Dist: ME, NY, MI, and ND south to sc. VA, e. TN, nw. GA, n. AL, n. AR, ne. OK, and CO. Material alleged to be this taxon in the FL peninsula has been treated as an endemic species (Franck & Werner 2023).

Origin/Endemic status: Native

Taxonomy Comments: See discussion in Graham (1975) about unresolved issues of typification and southern records of L. alatum (as here treated).

Synonymy ⓘ: = F, Il, Mi, Pa, S, S13, Va, W, WV; = Lythrum alatum Pursh ssp. alatum – NE, Haines (2010); = Lythrum alatum Pursh var. alatum – Ar, C, FNA10, G, GrPl, GW2, NY, Tn; = n/a – Tat; < Lythrum alatum Pursh var. alatum – Fl4, K1, K3, K4, WH3, Graham (1975); > Lythrum dacotanum Nieuwl. – Tx

Links to other floras: = Lythrum alatum var. alatum - FNA10

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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: OBL (taxonomic split from wetland indicator species)
  • Midwest: OBL (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily ⓘ: 8

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Alan Cressler: Lythrum alatum, Chickasawhatchee Wildlife Management Area, Calhoun County, Georgia 1 by Alan Cressler source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷

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