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Floristic Inventory of the Florida Keys Database Online

Cyperus compressus L.
Poorland flatsedge

Cyperus compressus
Copyright by: Keith A. Bradley

Family: Cyperaceae

Group: Monocot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

Native Range: Eastern and central United States, the West Indies, Mexico, Central America, South America and the Old World.

IRC SOUTH FLORIDA Status: Apparently Secure

Map of select IRC data for peninsular Florida

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

SOUTH FLORIDA Cultivated Status: Not Cultivated

Comments: For more images, click on the Atlas of Vascular Plants link below.

FLORIDA KEYS Occurrence: Present

FLORIDA KEYS Native Status: Native

IRC FLORIDA KEYS Status: Critically Imperiled

Map of select IRC data for the Florida Keys

Florida Keys History and Distribution: Reported in 1913 by John Kunkel Small for open hammocks and sandy places in the lower Keys.  It is still present there in disturbed areas at Key West.  It was also collected on Adams Key in the upper Keys by George D. Gann and Keith A. Bradley (1106, FTG) in 2001.  Although weedy, we consider this native and extant in the upper Keys and lower Keys.

Other data on Cyperus compressus available from :

Cyperus compressus has been reported from the following 3 conservation areas in the FLORIDA KEYS :
Occurrence Native Status
Biscayne National Park, Florida Keys Section Present Native
Dagny Johnson Key Largo Hammocks Botanical State Park Present Native
National Key Deer Refuge Possibly Extirpated Possibly Extirpated

Cyperus compressus has been reported for the following 2 habitats in THE FLORIDA KEYS :
Disturbed Upland
Disturbed Wetland

All Images:

Cyperus compressus
Copyright by: Keith A. Bradley

Cyperus compressus
Copyright by: Shirley Denton