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Taxon: Cyperus difformis L.

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 record from Linnaean Plant Name Typification Project of the Natural History Museum of London.
Name verified on: 10-Dec-2009 by ARS Systematic Botanists. Last updated: 11-Dec-2009
Species priority site is: Arctic and Subarctic Plant Gene Bank (PALM).

NO ACCESSIONS IN NPGS UNDER THIS NAME.

Common names:

  • dirty-Dora   (Source: F NSWales ) – English
  • rice sedge   (Source: F SE Queensl ) – English
  • small-flower umbrella-plant   (Source: Weed CIBA ) – English
  • variable flat sedge   (Source: F SAust ) – English
  • junca-diforme   (Source: A. Molina, p.c.) – Portuguese
  • cortadera   (Source: A. Molina, p.c.) – Spanish
  • juncia de agua   (Source: A. Molina, p.c.) – Spanish
  • lleivun   (Source: A. Molina, p.c.) – Spanish
More:

Economic importance:


Distributional range:

      Native:
  • AFRICA
    Macaronesia: Portugal - Azores
    Northern Africa: Egypt; Libya; Morocco
    Northeast Tropical Africa: Chad; Ethiopia; Somalia
    East Tropical Africa: Kenya; Tanzania; Uganda
    West-Central Tropical Africa: Burundi; Cameroon; Equatorial Guinea; Gabon; Rwanda; Zaire
    West Tropical Africa: Benin; Burkina Faso; Cote D'Ivoire; Gambia; Ghana; Guinea; Guinea-Bissau; Liberia; Niger; Nigeria; Senegal; Sierra Leone; Togo
    South Tropical Africa: Malawi
    Southern Africa: Botswana; Lesotho; Namibia; South Africa - Eastern Cape, Free State, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, North West, Northern Cape; Swaziland
    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: Japan - Hokkaido, Honshu, Kyushu, Ryukyu Islands, Shikoku; Korea; Taiwan
  • ASIA-TROPICAL
    Indian Subcontinent: Bhutan; India; Nepal; Pakistan; Sri Lanka
    Indo-China: Myanmar; Thailand; Vietnam
    Malesia: Indonesia; Malaysia; Papua New Guinea; Philippines
  • AUSTRALASIA
    Australia: Australia - New South Wales, Northern Territory, Queensland, South Australia, Victoria, Western Australia
  • EUROPE
    East Europe: Ukraine
    Southeastern Europe: Albania; Bulgaria; Former Yugoslavia; Greece [incl. Crete]; Italy [incl. Sicily]; Romania
    Southwestern Europe: France [incl. Corsica]; Portugal; Spain

      Naturalized: (links to other web resources are provided for some distributions)
  • 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, Mississippi, North Carolina, South Carolina, Tennessee, Virginia
    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, Michoacan
  • PACIFIC
    North-Central Pacific: United States - Hawaii
  • SOUTHERN AMERICA
    Caribbean: Jamaica; Puerto Rico
    Mesoamerica: Costa Rica; Nicaragua; Panama
    Northern South America: Guyana; Venezuela
    Western South America: Bolivia; Ecuador; Peru

      Other:
  • exact native range obscure

References:

  • 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.
  • CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988)
  • 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.
  • Davidse, G. et al., eds. 1994. Flora mesoamericana.
  • 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.
  • 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. (and Eritrea. 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.
  • 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 flora of Yemen.
  • Zohary, M. & N. Feinbrun-Dothan. 1966–. Flora palaestina.
More:

Check other web resources for Cyperus difformis L.:


Images:

More:
  • Check PlantSystematics.org for additional images
  • Google Images Images Note: Be advised that their identity may be inaccurate. Proper identification of a plant may require specialized taxonomic knowledge or comparison with properly documented herbarium material.

Abbreviations & symbols in GRIN Taxonomy
| USDA | ARS | GRIN | NPGS | New Search |
Cite as:
USDA, ARS, National Genetic Resources Program.
Germplasm Resources Information Network - (GRIN) [Online Database].
National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?402807 (20 May 2013)

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