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Cyperus squarrosus L.
Bearded flatsedge

Cyperus squarrosus
Copyright by: Lilly Anderson-Messec (2021) via iNaturalist

Family: Cyperaceae

Group: Monocot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

Native Range: Widespread in North America, the West Indies, Mexico, Central America, South America and the Old World.

Map of select IRC data for peninsular Florida

IRC SOUTH FLORIDA Status: Imperiled

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

South Florida History and Distribution: Ranked as critically imperiled in Rare Plants of South Florida (Gann et al. 2002; pp 137-139) based on two occurrences in one protected area (National Key Deer Refuge) and one non-protected area (Valhalla Rock Barren Site). It was also know from a few records on the mainland, but it was not clear if it was native there. It has subsequently been recorded at more locations on the mainland and was reranked as imperiled in 2024.

SOUTH FLORIDA Cultivated Status: Not Cultivated

Comments: For images, visit CalPhotos.

Synonyms: C. aristatus.

Other data on Cyperus squarrosus available from :

Cyperus squarrosus has been found in the following 4 conservation areas :
Occurrence Native Status
Big Cypress National Preserve Present Native
Corkscrew Swamp Sanctuary Present Native
Curry Hammock State Park Present Native
National Key Deer Refuge Present Native

Cyperus squarrosus has been found in the following 3 counties :
Occurrence Native Status
Broward County Native
Collier County Possibly Extirpated Possibly Extirpated
Monroe County (Keys) Native

Cyperus squarrosus has been found in the following 2 habitats :
Disturbed Wetland
Keys Cactus Barren

All Images:

Cyperus squarrosus
Copyright by: Lilly Anderson-Messec (2021) via iNaturalist
Cyperus squarrosus
Copyright by: Lilly Anderson-Messec (2021) via iNaturalist
Cyperus squarrosus
Copyright by: Lilly Anderson-Messec (2021) via iNaturalist
Cyperus squarrosus