Taxon: Cyperus difformis L.

Summary

Genus:

Cyperus

Family:

Cyperaceae

Subfamily:

Cyperoideae

Tribe:

Cypereae

Nomen number:

402807

Place of publication:

Cent. pl. II:6. 1756 (Amoen. acad. 4:302. 1759)

Typification:

View in Linnean Typification Project

Verified:

12/10/2009 ARS Systematic Botanists.

Accessions:

0 (0 active, 0 available) in National Plant Germplasm System.

Other conspecific taxa

Autonyms (not in current use), synonyms and invalid designations

No images

Links

Forestry Images – from www.forestryimages.org

Conservation Status

Reference(s)

University of Georgia Center for Invasive Species and Ecosystem Health
Boggan, J. et al. 1997. Checklist of the plants of the Guianas, ed. 2
Boulos, L. 1995. Flora of Egypt checklist.
Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45
Chinese Academy of Sciences. 1959-. Flora reipublicae popularis sinicae.
CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988) Note: four books on weeds worldwide in scope
Dassanayake, M. D. & F. R. Fosberg, eds. 1980-. A revised handbook to the flora of Ceylon.
Davidse, G. et al., eds. 1994. Flora mesoamericana.
Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
FNA Editorial Committee. 1993-. Flora of North America.
Foreman, D. B. & N. G. Walsh. 1993-. Flora of Victoria.
Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
Ghazanfar, S. A. 1992. An annotated catalogue of the vascular plants of Oman. Scripta Botanica Belgica 2
Gordon-Gray, K. D. 1995. Cyperaceae in Natal 56.
Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
Grierson, A. J. C. & D. J. Long. 1984-. Flora of Bhutan including a record of plants from Sikkim.
Haines, R. W. & K. A. Lye. 1983. Sedges and rushes of East Africa 165.
Hara, H. et al. 1978-1982. An enumeration of the flowering plants of Nepal.
Harden, G. J., ed. 1990-1993. Flora of New South Wales.
Hedberg, I. & S. Edwards. 1989-. Flora of Ethiopia Note: Eritrea added in 2000
Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
Holm, L. et al. 1979. A geographical atlas of world weeds
Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource).
Jessop, J. P. & H. R. Toelken, eds. 1986. Flora of South Australia, ed. 4.
Jørgensen, P. M. & S. León-Yánez, eds. 1999. Catalogue of the vascular plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75
Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2.
Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
Molina G., A. M. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 31 Mar.
Mouterde, P. 1966-. Nouvelle flore du Liban et de la Syrie.
Ohwi, J. 1965. Flora of Japan (Engl. ed.).
Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
Rechinger, K. H., ed. 1963-. Flora iranica.
Rye, B. L. 1997. A synopsis of the annual species of Cyperaceae from central and southern Western Australia. Nuytsia 11:405.
Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:257-258.
Smith, A. C. 1979-1991. Flora vitiensis nova.
Smitinand, T. & K. Larsen, eds. 1970-. Flora of Thailand.
Stanley, T. D. & E. M. Ross. 1983-1989. Flora of south-eastern Queensland.
Steenis, C. G. G. J. van, ed. 1948-. Flora malesiana.
Thulin, M., ed. 1993-. Flora of Somalia.
Townsend, C. C. & E. Guest. 1966-. Flora of Iraq.
Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:50.
Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
Wood, J. R. I. 1997. A handbook of the Yemen flora.
Zohary, M. & N. Feinbrun-Dothan. 1966-. Flora palaestina.
2018. Mid-Atlantic invasive plant species (on-line resource)

Common names

Language	Name	seq	Citation
English	dirty-Dora	1	Harden, G. J., ed. 1990-1993. Flora of New South Wales.
English	rice sedge	1	Stanley, T. D. & E. M. Ross. 1983-1989. Flora of south-eastern Queensland.
English	small-flower umbrella-plant	1	CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988) Note: four books on weeds worldwide in scope
English	variable flat sedge	1	Jessop, J. P. & H. R. Toelken, eds. 1986. Flora of South Australia, ed. 4.
Portuguese	junca-diforme	2	Molina G., A. M. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 31 Mar.
Spanish	cortadera	2	Molina G., A. M. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 31 Mar.
Spanish	juncia de agua	2	Molina G., A. M. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 31 Mar.
Spanish	lleivun	2	Molina G., A. M. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 31 Mar.

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Africa	East Tropical Africa	Kenya			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	East Tropical Africa	Tanzania			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	East Tropical Africa	Uganda			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Macaronesia	Portugal	Azores		Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Northeast Tropical Africa	Chad			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Northeast Tropical Africa	Ethiopia			Hedberg, I. & S. Edwards. 1989-. Flora of Ethiopia Note: Eritrea added in 2000
1	Native	Africa	Northeast Tropical Africa	Somalia			Thulin, M., ed. 1993-. Flora of Somalia.
1	Native	Africa	Northern Africa	Egypt			Boulos, L. 1995. Flora of Egypt checklist.
1	Native	Africa	Northern Africa	Libya			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Northern Africa	Morocco			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	South Tropical Africa	Malawi			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Southern Africa	Botswana			Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	Eswatini			Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	Lesotho			Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	Namibia			Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	South Africa	Eastern Cape		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	South Africa	Free State		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	South Africa	Gauteng		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	South Africa	KwaZulu-Natal		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	South Africa	Limpopo		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	South Africa	Mpumalanga		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	South Africa	Northern Cape		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	Southern Africa	South Africa	North-West		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
1	Native	Africa	West Tropical Africa	Benin			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Burkina Faso			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Côte D'Ivoire			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Gambia			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Ghana			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Guinea			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Guinea-Bissau			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Liberia			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Niger			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Nigeria			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Senegal			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Sierra Leone			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West Tropical Africa	Togo			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West-Central Tropical Africa	Burundi			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West-Central Tropical Africa	Cameroon			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West-Central Tropical Africa	Democratic Republic of the Congo			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West-Central Tropical Africa	Equatorial Guinea			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West-Central Tropical Africa	Gabon			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	West-Central Tropical Africa	Rwanda			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Western Indian Ocean	Comoros			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Western Indian Ocean	Madagascar			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Western Indian Ocean	Mauritius			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Western Indian Ocean	Reunion			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Africa	Western Indian Ocean	Seychelles			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Temperate	Arabian Peninsula	Oman			Ghazanfar, S. A. 1992. An annotated catalogue of the vascular plants of Oman. Scripta Botanica Belgica 2
1	Native	Asia-Temperate	Arabian Peninsula	Yemen			Wood, J. R. I. 1997. A handbook of the Yemen flora.
1	Native	Asia-Temperate	Caucasus	Azerbaijan			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
1	Native	Asia-Temperate	Caucasus	Georgia			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
1	Native	Asia-Temperate	Caucasus	Russian Federation	Dagestan		Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
1	Native	Asia-Temperate	China	China			Chinese Academy of Sciences. 1959-. Flora reipublicae popularis sinicae.
1	Native	Asia-Temperate	Eastern Asia	Japan	Hokkaidô
1	Native	Asia-Temperate	Eastern Asia	Japan	Honshu
1	Native	Asia-Temperate	Eastern Asia	Japan	Kyushu
1	Native	Asia-Temperate	Eastern Asia	Japan	Ryukyu Islands
1	Native	Asia-Temperate	Eastern Asia	Japan	Shikoku
1	Native	Asia-Temperate	Eastern Asia	Korea			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Temperate	Eastern Asia	Taiwan			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Temperate	Middle Asia	Kazakhstan			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Temperate	Middle Asia	Kyrgyzstan			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Temperate	Middle Asia	Tajikistan			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
1	Native	Asia-Temperate	Middle Asia	Uzbekistan			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
1	Native	Asia-Temperate	Russian Far East	Russian Federation	Primorye		Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
1	Native	Asia-Temperate	Western Asia	Afghanistan			Rechinger, K. H., ed. 1963-. Flora iranica.
1	Native	Asia-Temperate	Western Asia	Iran			Rechinger, K. H., ed. 1963-. Flora iranica.
1	Native	Asia-Temperate	Western Asia	Iraq			Townsend, C. C. & E. Guest. 1966-. Flora of Iraq.
1	Native	Asia-Temperate	Western Asia	Israel			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Temperate	Western Asia	Syria			Mouterde, P. 1966-. Nouvelle flore du Liban et de la Syrie.
1	Native	Asia-Temperate	Western Asia	Turkey			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Tropical	Indian Subcontinent	Bhutan			Grierson, A. J. C. & D. J. Long. 1984-. Flora of Bhutan including a record of plants from Sikkim.
1	Native	Asia-Tropical	Indian Subcontinent	India			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Tropical	Indian Subcontinent	Nepal			Hara, H. et al. 1978-1982. An enumeration of the flowering plants of Nepal.
1	Native	Asia-Tropical	Indian Subcontinent	Pakistan			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Tropical	Indian Subcontinent	Sri Lanka			Dassanayake, M. D. & F. R. Fosberg, eds. 1980-. A revised handbook to the flora of Ceylon.
1	Native	Asia-Tropical	Indo-China	Myanmar			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Tropical	Indo-China	Thailand			Smitinand, T. & K. Larsen, eds. 1970-. Flora of Thailand.
1	Native	Asia-Tropical	Indo-China	Vietnam			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Asia-Tropical	Malesia	Indonesia			Steenis, C. G. G. J. van, ed. 1948-. Flora malesiana.
1	Native	Asia-Tropical	Malesia	Malaysia			Steenis, C. G. G. J. van, ed. 1948-. Flora malesiana.
1	Native	Asia-Tropical	Malesia	Philippines			Steenis, C. G. G. J. van, ed. 1948-. Flora malesiana.
1	Native	Asia-Tropical	Papuasia	Papua New Guinea			Steenis, C. G. G. J. van, ed. 1948-. Flora malesiana.
1	Native	Australasia	Australia	Australia	New South Wales		Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
1	Native	Australasia	Australia	Australia	Northern Territory		Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
1	Native	Australasia	Australia	Australia	Queensland		Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
1	Native	Australasia	Australia	Australia	South Australia		Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
1	Native	Australasia	Australia	Australia	Victoria		Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
1	Native	Australasia	Australia	Australia	Western Australia		Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
1	Native	Europe	Eastern Europe	Russian Federation	Astrakhan		Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:257-258.
1	Native	Europe	Eastern Europe	Ukraine			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
1	Native	Europe	Southeastern Europe	Albania			Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
1	Native	Europe	Southeastern Europe	Bulgaria			Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
1	Native	Europe	Southeastern Europe	Croatia			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
1	Native	Europe	Southeastern Europe	Greece		incl. Crete	Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
1	Native	Europe	Southeastern Europe	Italy		incl. Sicily	Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
1	Native	Europe	Southeastern Europe	Romania			Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
1	Native	Europe	Southwestern Europe	France		incl. Corsica	Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
1	Native	Europe	Southwestern Europe	Portugal			Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
1	Native	Europe	Southwestern Europe	Spain			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Africa	Macaronesia	Portugal	Madeira Islands		Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Africa	Middle Atlantic Ocean	St. Helena			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Northern America	Northeastern U.S.A.	United States	New Jersey		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Northeastern U.S.A.	United States	Pennsylvania		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Northern Mexico	Mexico	Sinaloa		Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:50.
4	Naturalized	Northern America	Northern Mexico	Mexico	Sonora		Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:50.
4	Naturalized	Northern America	Northwestern U.S.A.	United States	Idaho		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Northwestern U.S.A.	United States	Oregon		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	South-Central U.S.A.	United States	New Mexico		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	South-Central U.S.A.	United States	Texas		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Alabama		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Florida		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Georgia		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Kentucky		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Louisiana		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Mississippi		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	North Carolina		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	South Carolina		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Tennessee		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Virginia		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southern Mexico	Mexico	Guanajuato		Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:50.
4	Naturalized	Northern America	Southern Mexico	Mexico	Jalisco		Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:50.
4	Naturalized	Northern America	Southern Mexico	Mexico	Michoacán de Ocampo		Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:50.
4	Naturalized	Northern America	Southwestern U.S.A.	United States	Arizona		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Northern America	Southwestern U.S.A.	United States	California		FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Pacific	North-Central Pacific	United States	Hawaii		Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Caribbean	Jamaica			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Caribbean	United States	Puerto Rico		Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Central America	Costa Rica			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Central America	Nicaragua			Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:50.
4	Naturalized	Southern America	Central America	Panama			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Northern South America	Guyana			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Northern South America	Venezuela			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Western South America	Bolivia			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Western South America	Ecuador			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Southern America	Western South America	Peru			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
6	Other					exact native range obscure

Native
Africa

MACARONESIA: Portugal [Azores]
NORTHERN AFRICA: Egypt, Libya, Morocco
NORTHEAST TROPICAL AFRICA: Ethiopia, Somalia, Chad
EAST TROPICAL AFRICA: Kenya, Tanzania, Uganda
WEST-CENTRAL TROPICAL AFRICA: Burundi, Cameroon, Democratic Republic of the Congo, Gabon, Equatorial Guinea, Rwanda
WEST TROPICAL AFRICA: Benin, Burkina Faso, Côte D'Ivoire, Ghana, Guinea, Gambia, Guinea-Bissau, Liberia, Niger, Nigeria, Senegal, Sierra Leone, Togo
SOUTH TROPICAL AFRICA: Malawi
SOUTHERN AFRICA: Botswana, Lesotho, Namibia, Eswatini, South Africa [Eastern Cape, Free State, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, Northern Cape, North-West]
WESTERN INDIAN OCEAN: Comoros, Madagascar, Mauritius, Reunion, Seychelles

Asia-Temperate

ARABIAN PENINSULA: Oman, Yemen
WESTERN ASIA: Afghanistan, Iran, Iraq, Israel, Syria, Turkey
CAUCASUS: Azerbaijan, Georgia, Russian Federation [Dagestan]
MIDDLE ASIA: Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan
RUSSIAN FAR EAST: Russian Federation [Primorye]
CHINA: China
EASTERN ASIA: Korea, Japan [Hokkaidô, Honshu, Kyushu, Ryukyu Islands, Shikoku], Taiwan

Asia-Tropical

INDIAN SUBCONTINENT: Bhutan, India, Sri Lanka, Nepal, Pakistan
PAPUASIA: Papua New Guinea
INDO-CHINA: Myanmar, Thailand, Vietnam
MALESIA: Indonesia, Malaysia, Philippines

Australasia

AUSTRALIA: Australia [New South Wales, Queensland, South Australia, Victoria, Western Australia, Northern Territory]

Europe

EASTERN EUROPE: Russian Federation [Astrakhan], Ukraine
SOUTHEASTERN EUROPE: Albania, Bulgaria, Greece (incl. Crete), Croatia, Italy (incl. Sicily), Romania
SOUTHWESTERN EUROPE: Spain, France (incl. Corsica), Portugal

Naturalized
Africa

MACARONESIA: Portugal [Madeira Islands]
MIDDLE ATLANTIC OCEAN: St. Helena

Northern America

NORTHEASTERN U.S.A.: United States [New Jersey, Pennsylvania]
NORTHWESTERN U.S.A.: United States [Idaho, Oregon]
SOUTHEASTERN U.S.A.: United States [Alabama, Florida, Georgia, Kentucky, Louisiana, North Carolina, South Carolina, Virginia, Mississippi, Tennessee]
SOUTH-CENTRAL U.S.A.: United States [New Mexico, Texas]
SOUTHWESTERN U.S.A.: United States [Arizona, California]
NORTHERN MEXICO: Mexico [Sinaloa, Sonora]
SOUTHERN MEXICO: Mexico [Guanajuato, Jalisco, Michoacán de Ocampo]

Pacific

NORTH-CENTRAL PACIFIC: United States [Hawaii]

Southern America

CARIBBEAN: Jamaica, United States [Puerto Rico]
CENTRAL AMERICA: Costa Rica, Nicaragua, Panama
NORTHERN SOUTH AMERICA: Guyana, Venezuela
WESTERN SOUTH AMERICA: Bolivia, Ecuador, Peru

Other (exact native range obscure)

Reference(s)

Boulos, L. 1995. Flora of Egypt checklist.
Chinese Academy of Sciences. 1959-. Flora reipublicae popularis sinicae.
Dassanayake, M. D. & F. R. Fosberg, eds. 1980-. A revised handbook to the flora of Ceylon.
Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
FNA Editorial Committee. 1993-. Flora of North America.
Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa.
Ghazanfar, S. A. 1992. An annotated catalogue of the vascular plants of Oman. Scripta Botanica Belgica 2
Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
Grierson, A. J. C. & D. J. Long. 1984-. Flora of Bhutan including a record of plants from Sikkim.
Hara, H. et al. 1978-1982. An enumeration of the flowering plants of Nepal.
Hedberg, I. & S. Edwards. 1989-. Flora of Ethiopia Note: Eritrea added in 2000
Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
Mouterde, P. 1966-. Nouvelle flore du Liban et de la Syrie.
Rechinger, K. H., ed. 1963-. Flora iranica.
Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:257-258.
Smitinand, T. & K. Larsen, eds. 1970-. Flora of Thailand.
Steenis, C. G. G. J. van, ed. 1948-. Flora malesiana.
Thulin, M., ed. 1993-. Flora of Somalia.
Townsend, C. C. & E. Guest. 1966-. Flora of Iraq.
Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:50.
Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
Wood, J. R. I. 1997. A handbook of the Yemen flora.

Economic Uses

Usage	Type	Note	Reference
Weed			CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988) Note: four books on weeds worldwide in scope
Weed		of rice fields	Dassanayake, M. D. & F. R. Fosberg, eds. 1980-. A revised handbook to the flora of Ceylon.

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2026. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=402807. Accessed 30 October 2026.