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Cyanthillium cinereum (L.) H. Rob.
Little ironweed

Cyanthillium cinereum
Copyright by: Keith A. Bradley

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

Native Range: Asia; now a widespread weed.

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

Synonyms: Vernonia cinerea.

Other data on Cyanthillium cinereum available from :

Atlas of Florida Vascular Plants
Cyanthillium cinereum has been found in the following 72 conservation areas :
Occurrence Native Status
Alice C. Wainwright Park Present Not Native, Naturalized
Big and Little George Hammocks Present Not Native, Naturalized
Big Cypress National Preserve Present Not Native, Naturalized
Bill Sadowski Park Present Not Native, Naturalized
Biscayne National Park Present Not Native, Naturalized
Black Point Park and Marina Present Not Native, Naturalized
Caloosahatchee Creeks Preserve Present Not Native, Naturalized
Camp Owaissa Bauer Present Not Native, Naturalized
Castellow Hammock Park Present Not Native, Naturalized
Chapman Field Park Present Not Native, Naturalized
Coral Pines Park Present Not Native, Naturalized
Crocodile Lake National Wildlife Refuge Present Not Native, Naturalized
Dagny Johnson Key Largo Hammocks Botanical State Park Present Not Native, Naturalized
Danforth Park Present Not Native, Naturalized
Deering Estate at Cutler Present Not Native, Naturalized
Delray Oaks Natural Area Present Not Native, Naturalized
Dove Creek Hammocks, Florida Keys Wildlife and Environmental Area Present Not Native, Naturalized
Dr. Von D. Mizell-Eula Johnson State Park Possibly Extirpated Not Native, Naturalized
Dry Tortugas National Park Present Not Native, Naturalized
Dupuis Reserve Present Not Native, Naturalized
Everglades National Park Present Not Native, Naturalized
Fern Forest Nature Center Present Not Native, Naturalized
Fisheating Creek Wildlife Management Area Present Not Native, Naturalized
Florida Atlantic University Ecological Site Present Not Native, Naturalized
Florida City Pineland Present Not Native, Naturalized
Fuchs Hammock Preserve Present Not Native, Naturalized
Girl Scouts South Miami Little House Present Not Native, Naturalized
Gulfstream Park Present Not Native, Naturalized
Halpatiokee Regional Park Present Not Native, Naturalized
Harden Hammock Present Not Native, Naturalized
Hattie Bauer Hammock Present Not Native, Naturalized
Hawk's Hammock Park Present Not Native, Naturalized
Hillsboro Pineland Natural Area Present Not Native, Naturalized
Hugh Taylor Birch State Park Present Not Native, Naturalized
Ingram Pineland Present Not Native, Naturalized
John Pennekamp Coral Reef State Park Present Not Native, Naturalized
Jonathan Dickinson State Park Present Not Native, Naturalized
Jupiter Inlet Lighthouse Outstanding Natural Area Present Not Native, Naturalized
Jupiter Ridge Natural Area Present Not Native, Naturalized
Koreshan State Historic Site Present Not Native, Naturalized
Long Key Natural Area & Nature Center Present Not Native, Naturalized
Long Key State Park Present Not Native, Naturalized
Lucille Hammock Present Not Native, Naturalized
Luis Martinez United States Army Reserve Station, Richmond Pine Rocklands Present Not Native, Naturalized
Medlock Pineland Present Not Native, Naturalized
Military Trail Natural Area Present Not Native, Naturalized
National Key Deer Refuge Present Not Native, Naturalized
Navy Wells Pineland Preserve Present Not Native, Naturalized
Nixon Smiley Pineland Addition Present Not Native, Naturalized
Oleta River State Park Present Not Native, Naturalized
Pine Ridge Sanctuary Present Not Native, Naturalized
Porter-Russell Pineland Present Not Native, Naturalized
Prairie Pines Preserve Present Not Native, Naturalized
Quail Roost Pineland Present Not Native, Naturalized
R. Hardy Matheson Preserve Present Not Native, Naturalized
Riverbend Park Present Not Native, Naturalized
Rockdale Pineland Present Not Native, Naturalized
Rocky Point Hammock Present Not Native, Naturalized
Royal Palm Beach Pines Natural Area Present Not Native, Naturalized
Savannas Preserve State Park Present Not Native, Naturalized
School Board Property (Moody Drive and Turnpike) Not Native, Naturalized
Scrub Oak Park Present Not Native, Naturalized
Seabranch Preserve State Park Present Not Native, Naturalized
Seminole Wayside Park Present Not Native, Naturalized
Sewell Park Present Not Native, Naturalized
Silver Palm Groves Present Not Native, Naturalized
Silver Palm Hammock Present Not Native, Naturalized
Six Mile Cypress Slough Preserve Present Not Native, Naturalized
The Barnacle State Historic Park Present Not Native, Naturalized
West Biscayne Pineland Present Not Native, Naturalized
Wild Turkey Strand Preserve Present Not Native, Naturalized
Yellow Fever Creek Preserve Present Not Native, Naturalized

Cyanthillium cinereum has been found in the following 7 counties :
Occurrence Native Status
Broward County Not Native, Naturalized
Hendry County Not Native, Naturalized
Lee County Not Native, Naturalized
Martin County Not Native, Naturalized
Miami-Dade County Not Native, Naturalized
Monroe County (Keys) Not Native, Naturalized
Palm Beach County Not Native, Naturalized


All Images:

Cyanthillium cinereum
Copyright by: Keith A. Bradley
Cyanthillium cinereum
Copyright by: Shirley Denton