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Parthenium hysterophorus Linnaeus. Section: Parthenium. Santa Maria, Feverfew, Gajarghass, Congress Grass. Phen: Jul-Nov. Hab: Disturbed areas. Dist: Native of tropical America, including the West Indies.

Origin/Endemic status: Neotropics

Synonymy ⓘ: = Ar, Bah, C, F, Fl7, FNA21, G, GrPl, Il, K1, K3, K4, Mi, Mo2, NcTx, NE, NY, Oh3, Pa, S, SE1, Tat, Tx, WH3, Rollins (1950); = n/a – RAB

Links to other floras: = Parthenium hysterophorus - FNA21

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FAC
  • Eastern Mountains and Piedmont: FAC
  • Great Plains: FAC
  • Midwest: FAC
  • Northcentral & Northeast: UPL

Heliophily ⓘ: 9

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image of plant© Aidan Campos source | Original Image ⭷
image of plant© Keith Bradley | Original Image ⭷
image of plant© Aidan Campos source | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷

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