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Helianthus angustifolius L.
Narroleaf sunflower, Swamp sunflower

Helianthus angustifolius
Copyright by: Keith A. Bradley

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Perennial

Native Range: Eastern and southeastern United States.

Map of select IRC data for peninsular Florida

IRC SOUTH FLORIDA Status: Imperiled

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

SOUTH FLORIDA Cultivated Status: Cultivated

Comments: See a 2019 post on the Treasure Coast Natives blog on why sunflowers bend.

Other data on Helianthus angustifolius available from :

Atlas of Florida Vascular Plants
Helianthus angustifolius has been found in the following 11 conservation areas :
Occurrence Native Status
Babcock Ranch Preserve Present Native
Big Cypress National Preserve Reported
Caloosahatchee Creeks Preserve Present Native
Cedar Point Environmental Park Present Native
Corkscrew Regional Ecosystem Watershed (CREW) Present Native
Corkscrew Swamp Sanctuary Present Native
Dupuis Reserve Present Native
Fakahatchee Strand Preserve State Park Present Native
Halpatiokee Regional Park Present Native
J.W. Corbett Wildlife Management Area Present Native
Jonathan Dickinson State Park Present Native

Helianthus angustifolius has been found in the following 4 counties :
Occurrence Native Status
Charlotte County Native
Glades County Native
Lee County Native
Martin County Native

Helianthus angustifolius has been found in the following 3 habitats :
Mesic Flatwoods
Scrubby Flatwoods
Wet Flatwoods

All Images:

Helianthus angustifolius
Copyright by: Keith A. Bradley
Helianthus angustifolius
Copyright by: Keith A. Bradley
Helianthus angustifolius
Copyright by: Keith A. Bradley