Help us maintain this website and keep it free and open for our community of scientists, students, and conservation managers, who depend on it to obtain the most up to date information. Help us save species and restore native ecosystems!

Close

Please scroll to the bottom for more images.
Symphyotrichum expansum (Poeppig ex Spreng.) G.L. Nesom
Southwestern annual saltmarsh aster

Symphyotrichum expansum
Copyright by: Roger L. Hammer, 2020. A weed growing in an abandoned road bed at Dagny Johnson Key Largo Hammock Botanical State Park, Monroe County, Florida, USA.

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Perennial

Native Range: Southern United States, the West Indies (Greater Antilles), Mexico; perhaps speading as a weed elsewhere.

Map of select IRC data for peninsular Florida

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Presumed to be Native

South Florida History and Distribution: A weed similar to S. bahamense. Very likely more common than records indicate. Reported by J.K. Small (1913) for Key West.

Synonyms: Aster inconspicuus.

Other data on Symphyotrichum expansum available from :

Atlas of Florida Vascular Plants
Symphyotrichum expansum has been found in the following 2 conservation areas :
Occurrence Native Status
Dagny Johnson Key Largo Hammocks Botanical State Park Present Native
Tropical Park Present Native

Symphyotrichum expansum has been found in the following 3 counties :
Occurrence Native Status
Collier County Native
Miami-Dade County Native
Monroe County (Keys) Native

Symphyotrichum expansum has been found in the following 2 habitats :
Disturbed Upland
Disturbed Wetland

All Images:

Symphyotrichum expansum
Copyright by: Roger L. Hammer, 2020. A weed growing in an abandoned road bed at Dagny Johnson Key Largo Hammock Botanical State Park, Monroe County, Florida, USA.