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Chromolaena frustrata (B.L. Rob.) R.M. King & H. Rob.
Cape Sable thoroughwort

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Perennial

Native Range: Endemic to South Florida in Monroe County, both in the Florida Keys and on the mainland.

NatureServe Global Status: Critically Imperiled

United States Federal Status: Endangered

State of Florida Status: Endangered

Florida Natural Areas Inventory State Status: Critically Imperiled

IRC SOUTH FLORIDA Status: Critically Imperiled

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

SOUTH FLORIDA Cultivated Status: Cultivated

Comments: For a current review of C. frustrata throughout its range, see the U.S. Fish and Wildlife Species Profile.

See also, IRC’s report
Vascular plant species of management concern in Everglades National Park (Gann 2015), page 172.


Synonyms: Osmia frustrata.

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Chromolaena frustrata
Copyright by: Keith A. Bradley

Other data on Chromolaena frustrata available from :
Institute for Regional Conservation
IRC Species Account
Atlas of Florida Vascular Plants
Chromolaena frustrata has been found in the following 5 conservation areas :
Occurrence Native Status
Everglades National Park Present Native
Greynolds Park Recorded as Present in Error
Key West National Wildlife Refuge Present Native
Lignumvitae Key Botanical State Park Present Native
Long Key State Park Present Native


Chromolaena frustrata has been found in the following 2 counties :
Occurrence Native Status
Monroe County (Keys) Native
Monroe County (Mainland) Possibly Extirpated Possibly Extirpated


Chromolaena frustrata has been found in the following 3 habitats :
Coastal Berm
Coastal Rock Barren
Rockland Hammock


All Images:

Chromolaena frustrata
Copyright by: Keith A. Bradley
Chromolaena frustrata
Copyright by: Keith Buttry, 2014
In habitat, Everglades National Park

Chromolaena frustrata
Copyright by: Keith A. Bradley
Chromolaena frustrata
Copyright by: Keith A. Bradley

Chromolaena frustrata
Copyright by: Keith Buttry, 2014
In habitat, Everglades National Park