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Eutrochium maculatum (Linnaeus) E.E. Lamont var. maculatum . Spotted Joe-pye-weed. Phen: Late Jul-Oct. Hab: Marl fens, wet calcareous meadows, cove forests, grassy balds. Dist: The species is widespread across n. North America: NL (Newfoundland), ME, QC, ON, and MN, south to PA, OH, n. KY, c. IL, and c. IA, and in the Mountains south to e. WV, w. VA, and w. NC.

Origin/Endemic status: Native

Taxonomy Comments: Var. bruneri (A. Gray) E.E. Lamont is more western; var. foliosum (Fernald) E.E. Lamont, is more northern. Further investigation is needed of the peculiar and implausible change in habitat of this species, from calcareous wetlands in c. VA northward, to mesic high elevation slopes and forests (in acidic to very acidic soils) from sw. VA southward. Such a change is suggestive of the presence of an unrecognized, cryptic taxon in the Southern Appalachians.

Synonymy: = FNA21, K4, Mi, NE, NY, Va, Lamont (2004); = Eupatorium maculatum L. ssp. maculatum var. maculatum – C, Lamont (1995); = Eupatorium maculatum L. var. maculatum – G, K1, SE1; = n/a – Tat; < Eupatoriadelphus maculatus – Schmidt & Schilling (2000); < Eupatorium maculatum L. – Oh3, RAB, W, WV; < Eupatorium maculatum L. var. maculatum – F; < Eutrochium maculatum (L.) E.E.Lamont – Il, Pa, Tn

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW (name change)
  • Eastern Mountains and Piedmont: FACW (name change)
  • Great Plains: OBL (name change)
  • Midwest: OBL (name change)
  • Northcentral & Northeast: OBL (name change)

Heliophily: 7

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷


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