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Eupatorium pubescens Muhlenberg ex Willdenow. Inland Roundleaf Eupatorium. Phen: Jul-Sep. Hab: Forests and woodlands, woodland edges, roadbanks. Dist: Primarily in the Appalachians and adjacent provinces, ranging from ME west to OH, south to n. GA, n. AL, AR and LA; the distribution, abundance, and phenology of E. pubescens need additional study because of frequent lumping with E. rotundifolium.

Origin/Endemic status: Native

Taxonomy Comments: Where growing together, E. pubescens apparently flowers about a month earlier than E. rotundifolium. This taxon appears to be a stabilized polyploid complex originating from hybridization of E. rotundifolium and (perhaps) E. sessilifolium; in that it now functions as a more-or-less independent evolutionary lineage, with distinctive morphology, habitat, and distribution, it is here treated as a species.

Synonymy ⓘ: = F, NE, NY, Tat, Va, WV; = Eupatorium rotundifolium L. var. ovatum (Bigelow) Torr. – Ar, C, FNA21, G, K1, K3, K4, Oh3, Pa, SE1, W, Cronquist (1985); < Eupatorium pubescens Muhl. ex Willd. – S; < Eupatorium rotundifolium L. – GW2; < Eupatorium rotundifolium L. ssp. ovatum (Bigelow) Montgom. & Fairbrothers – Montgomery & Fairbrothers (1970); < Eupatorium rotundifolium L. var. ovatum (Bigelow) Torr. – RAB

Links to other floras: = Eupatorium rotundifolium var. ovatum - FNA21

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Wetland Indicator Status:

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

Heliophily ⓘ: 7

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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© Gary P. Fleming | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Joey Shaw source | Original Image ⭷

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