§1 Plant
Cyperus iria L.
vernacular ricefield flatsedge — species · Cyperaceae
§2Habit & range
Habit and range
- Growth habit
- Graminoid
- Duration
- Annual
- Group
- Monocot
- Family
- Cyperaceae Juss.
- Genus
- Cyperus
§2a
Native status, by region
- L48 Lower 48 States Introduced
- PB Pacific Basin (except Hawaii) Native
- PR Puerto Rico Introduced
§2b
County-level range
· 277 counties across 14 states/territories§3Cultivation
No cultivation specs.
USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.
§4Counties, by state
Recorded in 277 counties across 14 states/territories.
Alabama view state ↗ 12 I ▾
Arkansas view state ↗ 30 I ▾
- Arkansas 05001
- Ashley 05003
- Bradley 05011
- Chicot 05017
- Clay 05021
- Cleveland 05025
- Craighead 05031
- Crittenden 05035
- Cross 05037
- Desha 05041
- Drew 05043
- Franklin 05047
- Grant 05053
- Greene 05055
- Jackson 05067
- Jefferson 05069
- Lawrence 05075
- Lincoln 05079
- Lonoke 05085
- Mississippi 05093
- Monroe 05095
- Newton 05101
- Poinsett 05111
- Polk 05113
- Pope 05115
- Prairie 05117
- Randolph 05121
- Union 05139
- Washington 05143
- Woodruff 05147
Delaware view state ↗ 2 I ▾
District of Columbia view state ↗ 1 I ▾
Florida view state ↗ 24 I ▾
- Bradford 12007
- Broward 12011
- Calhoun 12013
- Collier 12021
- Duval 12031
- Escambia 12033
- Franklin 12037
- Gadsden 12039
- Gulf 12045
- Lake 12069
- Leon 12073
- Liberty 12077
- Manatee 12081
- Miami-Dade 12086
- Nassau 12089
- Orange 12095
- Osceola 12097
- Palm Beach 12099
- Santa Rosa 12113
- Sarasota 12115
- Seminole 12117
- St. Johns 12109
- St. Lucie 12111
- Walton 12131
Georgia view state ↗ 10 I ▾
Kentucky view state ↗ 18 I ▾
Louisiana view state ↗ 62 I ▾
- Acadia 22001
- Allen 22003
- Ascension 22005
- Assumption 22007
- Avoyelles 22009
- Beauregard 22011
- Bienville 22013
- Bossier 22015
- Caddo 22017
- Calcasieu 22019
- Caldwell 22021
- Cameron 22023
- Catahoula 22025
- Claiborne 22027
- Concordia 22029
- De Soto 22031
- East Baton Rouge 22033
- East Carroll 22035
- East Feliciana 22037
- Evangeline 22039
- Franklin 22041
- Grant 22043
- Iberia 22045
- Iberville 22047
- Jackson 22049
- Jefferson 22051
- Jefferson Davis 22053
- Lafayette 22055
- Lafourche 22057
- LaSalle 22059
- Lincoln 22061
- Livingston 22063
- Madison 22065
- Morehouse 22067
- Natchitoches 22069
- Orleans 22071
- Ouachita 22073
- Pointe Coupee 22077
- Rapides 22079
- Red River 22081
- Richland 22083
- Sabine 22085
- St. Charles 22089
- St. Helena 22091
- St. James 22093
- St. John the Baptist 22095
- St. Landry 22097
- St. Martin 22099
- St. Mary 22101
- St. Tammany 22103
- Tangipahoa 22105
- Tensas 22107
- Terrebonne 22109
- Union 22111
- Vermilion 22113
- Vernon 22115
- Washington 22117
- Webster 22119
- West Baton Rouge 22121
- West Carroll 22123
- West Feliciana 22125
- Winn 22127
Mississippi view state ↗ 25 I ▾
- Adams 28001
- Amite 28005
- Copiah 28029
- DeSoto 28033
- Forrest 28035
- Holmes 28051
- Lafayette 28071
- Lauderdale 28075
- Lawrence 28077
- Leake 28079
- Leflore 28083
- Madison 28089
- Marshall 28093
- Montgomery 28097
- Panola 28107
- Pearl River 28109
- Quitman 28119
- Rankin 28121
- Scott 28123
- Simpson 28127
- Sunflower 28133
- Tallahatchie 28135
- Union 28145
- Washington 28151
- Yalobusha 28161
New Jersey view state ↗ 2 I ▾
New York view state ↗ 6 I ▾
North Carolina view state ↗ 36 I ▾
- Anson 37007
- Beaufort 37013
- Bertie 37015
- Caswell 37033
- Chatham 37037
- Cherokee 37039
- Chowan 37041
- Cumberland 37051
- Duplin 37061
- Durham 37063
- Edgecombe 37065
- Franklin 37069
- Gates 37073
- Granville 37077
- Greene 37079
- Hertford 37091
- Johnston 37101
- Jones 37103
- Lenoir 37107
- Martin 37117
- Mecklenburg 37119
- Northampton 37131
- Orange 37135
- Pamlico 37137
- Pasquotank 37139
- Pitt 37147
- Richmond 37153
- Robeson 37155
- Scotland 37165
- Stanly 37167
- Union 37179
- Vance 37181
- Wake 37183
- Washington 37187
- Wayne 37191
- Wilson 37195
Pennsylvania view state ↗ 1 I ▾
Virginia view state ↗ 48 I ▾
- Accomack 51001
- Albemarle 51003
- Amelia 51007
- Arlington 51013
- Brunswick 51025
- Buckingham 51029
- Caroline 51033
- Charles City 51036
- Charlotte 51037
- Chesapeake (city) 51550
- Chesterfield 51041
- Culpeper 51047
- Cumberland 51049
- Dinwiddie 51053
- Essex 51057
- Fairfax 51059
- Gloucester 51073
- Goochland 51075
- Greensville 51081
- Halifax 51083
- Hampton (city) 51650
- Hanover 51085
- Henrico 51087
- Isle of Wight 51093
- James City 51095
- King and Queen 51097
- King George 51099
- King William 51101
- Lancaster 51103
- Lunenburg 51111
- Mecklenburg 51117
- Newport News (city) 51700
- Northampton 51131
- Northumberland 51133
- Nottoway 51135
- Powhatan 51145
- Prince Edward 51147
- Prince George 51149
- Prince William 51153
- Richmond 51159
- Southampton 51175
- Stafford 51179
- Suffolk (city) 51800
- Surry 51181
- Sussex 51183
- Virginia Beach (city) 51810
- Westmoreland 51193
- York 51199
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/CYIR ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/2715729 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T05:45:41Z