Parthenium hysterophorus Linnaeus. Section: Parthenium. Common name: Santa Maria, Feverfew, Gajarghass, Congress Grass. Phenology: Jul-Nov. Habitat: Disturbed areas. Distribution: Native of tropical America, including the West Indies.
Origin/Endemic status: Neotropics
Other Comments: Virginia specimens were corrected to Tanacetum parthenium (G. Fleming, pers. comm., 2024)
Synonymy ⓘ: = Ar, Bah, C, F, Fl7, FNA21, G, GrPl, Il, K4, Mi, Mo2, NcTx, NE, NY, Oh3, Pa, S, SE1, Tat, Tx, WH3, Rollins (1950); = n/a — RAB. Basionym: Parthenium hysterophorus L. 1753
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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© Aidan Campos source | Original Image ⭷
© Keith Bradley | Original Image ⭷
© Aidan Campos source | Original Image ⭷
© Bruce A. Sorrie | Original Image ⭷Feedback
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