Eupatorium scabridum Elliott. Common name: Roughleaf Eupatorium. Phenology: Late Jul-Oct. Habitat: Pine savannas, wet pinelands, dry, gravelly oak savannas and probably oak-shortleaf pine savannas and open woodlands, powerlines, roadbanks (in grassland remnants). Distribution: SC south to n. FL, west to AR, LA, and OK.
Origin/Endemic status: Endemic
Taxonomy Comments: This plant is believed to be an allopolyploid and apomictic derivative of the hybrid E. rotundifolium × semiserratum. In some areas it apparently consists only of short-lived diploids, but in others (according to Godfrey & Wooten [1981] especially in SC, AR and LA) to occur as populations of polyploid apomicts. It resembles E. rotundifolium, but has cuneate leaves with a less prominent pair of lateral veins, narrower leaves, and is more likely to have 3-whorled leaves (as E. semiserratum often does).
Synonymy ⓘ: = GW2, S; = Eupatorium rotundifolium L. var. scabridum (Elliott) A.Gray — Ar, FNA21, K4, SE1; = n/a — C, RAB; < Eupatorium rotundifolium L. — F, Fl7, Tx, WH3; < Eupatorium rotundifolium L. ssp. rotundifolium — Montgomery & Fairbrothers (1970); < Eupatorium scabridum Elliott — Tn; Eupatorium scabridum Elliott. Basionym: Eupatorium scabridum Elliott 1824 [1823]
Links to other floras: = Eupatorium rotundifolium var. scabridum - 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 ⓘ: 8
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© theo_witsell, some rights reserved (CC BY-NC), uploaded by theo_witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© theo_witsell, some rights reserved (CC BY-NC), uploaded by theo_witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© J. Richard Abbott, some rights reserved (CC BY-NC), uploaded by J. Richard Abbott source CC-BY-NC | Original Image ⭷Feedback
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