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Cyperus cuspidatus Kunth
Coastalplain flatsedge

Cyperus cuspidatus
Copyright by: Jay Horn (2021) via iNaturalist

Family: Cyperaceae

Group: Monocot

Substrate: Terrestrial

Habit: Herb

Perennation: Annual

Native Range: Scattered in the southeastern United States, the West Indies, Mexico, Central America and South America; also in the Old World.

Map of select IRC data for peninsular Florida

Florida Natural Areas Inventory State Status: Not listed

IRC SOUTH FLORIDA Status: Critically Imperiled

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

South Florida History and Distribution: This was reported as possibly extirpated in South Florida in Gann et al. (2002; pp 137-139), based on herbarium specimens collected from 1843 to 1980 in Charlotte, Collier, and Lee counties and the Monroe County Keys. The locality of the 1980 collection was undergoing development in 2000. Jay Horn observed this in 2021 at Carnestown, Collier County and reported it on iNaturalist. This station is about 15 miles from where Olga Lakela made a collection at Collier-Seminole State Park in 1965 (Lakela 29208 USF).

SOUTH FLORIDA Cultivated Status: Not Cultivated

Other data on Cyperus cuspidatus available from :

Cyperus cuspidatus has been found in the following conservation area :
Occurrence Native Status
Collier-Seminole State Park Presumed Extirpated Presumed Extirpated

Cyperus cuspidatus has been found in the following 4 counties :
Occurrence Native Status
Charlotte County Possibly Extirpated Possibly Extirpated
Collier County Native
Lee County Possibly Extirpated Possibly Extirpated
Monroe County (Keys) Presumed Extirpated Presumed Extirpated

Cyperus cuspidatus has been found in the following 3 habitats :
Coastal Berm
Disturbed Wetland
Mesic Flatwoods

All Images:

Cyperus cuspidatus
Copyright by: Jay Horn (2021) via iNaturalist