Swan's sedge
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Cyperaceae
- genus: Carex
- species: Carex swanii
Sutton
Quebec
Canada
Bridgeport- Cromwell
- Hartford
- Middletown
- North Grosvenor Dale
- Thompson
Connecticut- Georgetown
- Ocean View
Delaware- Franklin
- North Vernon
Indiana- Berwyn Heights
- Bladensburg
- Brentwood
- Brookmont
- Cabin John
- Calverton
- Chesapeake Beach
- Cheverly
- Clinton
- College Park
- Colmar Manor
- Cottage City
- District Heights
- East Riverdale
- Edmonston
- Forest Heights
- Glassmanor
- Goddard
- Hyattsville
- Lanham
- Morningside
- Mount Rainier
- New Carrollton
- North Beach
- Oxon Hill
- Potomac
- Riverdale Park
- Seabrook
- Suitland
- Timonium
- University Park
Maryland- Portsmouth
New Hampshire- Bay Park
- Borough of Bronx
- Cedarhurst
- Cold Spring
- Colonie
- Croton-on-Hudson
- East Shoreham
- Franklin Square
- Greenport
- Greenport West
- Halesite
- Haverstraw
- Herricks
- Hewlett
- Hewlett Harbor
- Huntington
- Huntington Station
- Inwood
- Jamaica
- Lakeview
- Lawrence
- Lynbrook
- Malverne
- Manhasset Hills
- Manhattan
- Mattituck
- Merrick
- Montauk
- Mount Kisco
- North Hills
- Oriskany
- Penn Yan
- Pine Plains
- Pound Ridge
- Searingtown
- Shelter Island
- Shelter Island Heights
- South Valley Stream
- Springs
- Staten Island
- Valley Stream
- West Haverstraw
- West Hempstead
- West Hills
- West Point
- Woodmere
- Yaphank
- Yonkers
New York- Flat Rock
North Carolina- Cleveland
Ohio- East Providence
Rhode Island- Newfane
Vermont- Washington, D. C.
Washington, D.C.
United States