Please scroll to the bottom for more images.
Floristic Inventory of the Florida Keys Database Online

Parthenium hysterophorus L.
Santa Maria, Santa Maria feverfew

Parthenium hysterophorus
Copyright by: Keith A. Bradley

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

Native Range: West Indies, Mexico, Central America and South America; a naturalized weed elsewhere.

Map of select IRC data for peninsular Florida

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Not Native, Naturalized

SOUTH FLORIDA Cultivated Status: Not Cultivated

Comments: For more images, click on the Atlas of Vascular Plants link below.

FLORIDA KEYS Occurrence: Present

FLORIDA KEYS Native Status: Not Native, Naturalized

Map of select IRC data for the Florida Keys

Florida Keys History and Distribution: Reported in 1884 by J. Cosmo Melvill for the island of Key West.  Reported in 1913 by John Kunkel Small for disturbed areas on the island of Key West.  Sparingly naturalized from the upper Keys to the lower Keys.

Other data on Parthenium hysterophorus available from :


Parthenium hysterophorus has been reported from the following 3 conservation areas in the FLORIDA KEYS :
Occurrence Native Status
Crocodile Lake National Wildlife Refuge Present Not Native, Naturalized
Dagny Johnson Key Largo Hammocks Botanical State Park Present Not Native, Naturalized
John Pennekamp Coral Reef State Park Reported




Parthenium hysterophorus has been reported for the following habitat in THE FLORIDA KEYS :
Disturbed Upland


All Images:

Parthenium hysterophorus
Copyright by: Keith A. Bradley

Parthenium hysterophorus
Copyright by: Shirley Denton