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Aristida rhizomophora Swallen
Florida threeawn

Aristida rhizomophora
Copyright by: Grasses, Sedges and Rushes of Palm Beach and Martin Counties, Florida website.

Family: Poaceae

Group: Monocot

Substrate: Terrestrial

Habit: Herb

Perennation: Perennial

Native Range: Endemic to peninsular Florida.

Map of select IRC data for peninsular Florida

NatureServe Global Status: Vulnerable

Florida Natural Areas Inventory State Status: Apparently Secure

IRC SOUTH FLORIDA Status: Imperiled

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

South Florida History and Distribution: This species was ranked as imperiled in Rare Plants of South Florida (Gann et al. 2002). It was reassessed in 2025 using updated NatureServe criteria and the rank of imperiled was retained.

SOUTH FLORIDA Cultivated Status: Not Cultivated

Comments: For images and more information, visit the Grasses, Sedges and Rushes of Palm Beach and Martin Counties website or click on the Atlas of Florida Vascular Plants link below for more images.

Other data on Aristida rhizomophora available from :

Atlas of Florida Vascular Plants
Aristida rhizomophora has been found in the following 11 conservation areas :
Occurrence Native Status
Danforth Park Present Native
Dupuis Reserve Presumed Extirpated Presumed Extirpated
Frenchman's Forest Natural Area Present Native
Halpatiokee Regional Park Present Native
Hawk's Hammock Park Present Native
Jonathan Dickinson State Park Present Native
Loxahatchee River Natural Area Present Native
Loxahatchee Slough Natural Area Present Native
Pal-Mar Present Native
Pine Jog Environmental Sciences Center Present Native
Savannas Preserve State Park Present Native

Aristida rhizomophora has been found in the following 2 counties :
Occurrence Native Status
Martin County Native
Palm Beach County Native

Aristida rhizomophora has been found in the following habitat :
Wet Flatwoods

All Images:

Aristida rhizomophora
Copyright by: Grasses, Sedges and Rushes of Palm Beach and Martin Counties, Florida website.
Aristida rhizomophora
Copyright by: Grasses, Sedges and Rushes of Palm Beach and Martin Counties, Florida website.
Aristida rhizomophora
Copyright by: Grasses, Sedges and Rushes of Palm Beach and Martin Counties, Florida website.