Santa Maria Feverfew, Parthenium hysterophorus

San Diego Creek Channel, nr. IRWD plant, 8-27-16. © Ron Vanderhoff	Santa Maria Feverfew Parthenium hysterophorus Exotic species, native to the American tropics Back to Asteraceae of Orange County, California Back to Eudicots of Orange County, California Back to Natural History of Orange County, California
Vic Lincoln Ave, E 17th St., Santa Ana, 8-28-16. © Ron Vanderhoff	San Diego Creek Channel, nr. IRWD plant, 8-27-16. © Ron Vanderhoff
Vic Lincoln Ave, E 17th St., Santa Ana, 8-28-16. © Ron Vanderhoff	San Diego Creek Channel, nr. IRWD plant, 8-27-16. © Ron Vanderhoff
San Diego Creek Channel, nr. IRWD plant, 8-27-16. © Ron Vanderhoff	San Diego Creek Channel, nr. IRWD plant, 8-27-16. © Ron Vanderhoff
San Diego Creek Channel, nr. IRWD plant, 8-27-16. © Ron Vanderhoff	Vic Lincoln Ave, E 17th St., Santa Ana, 8-28-16. © Ron Vanderhoff
San Diego Creek Channel, nr. IRWD plant, 8-27-16. © Ron Vanderhoff	San Diego Creek Channel, nr. IRWD plant, 8-27-16. © Ron Vanderhoff
Vic Lincoln Ave, E 17th St., Santa Ana, 8-28-16. © Ron Vanderhoff	Vic Lincoln Ave, E 17th St., Santa Ana, 8-28-16. © Ron Vanderhoff
Vic Lincoln Ave, E 17th St., Santa Ana, 8-28-16. © Ron Vanderhoff
Parthenium hysterophorus, Ambrosia acanthicarpa, San Diego Creek Channel, Campus to Michelson, 9-1-16. © Ron Vanderhoff.