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Taxon: Spirodela polyrhiza (L.) Schleid.

 
Genus: Spirodela
Family: Araceae
Subfamily: Lemnoideae
Nomen number: 400337
Place of publication: Linnaea 13:392. 1839
Link to protologue:
Comment: recommendation of W. T. Stearn, Botanical Latin ed. 4: 261. 1992 followed in retaining original spelling: "The initial ρ of a Greek word transliterated as rh, e.g. rhiza (ριζα, root, rhizome), should have an additional r added to it when preceded by a vowel, e.g. Glycyrrhiza (γλυκυρριζα, liquorice, from γλυκος, sweet, ριζα, root), leptorrhiza (λεπτορριζα, with a thin root, from λεπτος, small, slender), but as many reputable authors, Linnaeus among them, have omitted this additional r, it is best regarded as optional and an author's original spelling, as in Lemna polyrhiza, should be accepted."
Name Verified on: 06-Oct-1994 by ARS Systematic Botanists.
Accessions: 0 (0 active, 0 available) in National Plant Germplasm System

Autonyms (not in current use) and synonyms:

(≡ homotypic synonym, = heterotypic synonym, - autonym)

Common names:

  • great duckweed  (Source: Websters Dict) - English
  • greater duckweed  (Source: BSBI) - English
  • water flaxseed  (Source: Hortus 3) - English
  • spirodèle polyrhize  (Source: F NAmer) - French
  • vielwurzelige Teichlinse  (Source: Zander Ency) - German

Economic Importance:

  • Animal food: fodder
  • Weed:

Distributional Range:

    Native

    Africa
    • NORTHERN AFRICA: Algeria, Egypt, Morocco
    • NORTHEAST TROPICAL AFRICA: Chad, Ethiopia, Sudan
    • EAST TROPICAL AFRICA: Kenya, Tanzania, Uganda
    • WEST-CENTRAL TROPICAL AFRICA: Burundi, Cameroon, Democratic Republic of the Congo, Rwanda
    • WEST TROPICAL AFRICA: Benin, Ghana, Nigeria, Senegal, Togo
    • SOUTH TROPICAL AFRICA: Malawi, Mozambique, Zambia, Zimbabwe
    • SOUTHERN AFRICA: Botswana, South Africa [KwaZulu-Natal, Free State]
    • WESTERN INDIAN OCEAN: Madagascar

    Asia-Temperate
    • WESTERN ASIA: Afghanistan, Iran, Israel, Syria, Turkey
    • CAUCASUS: Azerbaijan, Georgia
    • SIBERIA: Russian Federation [Buryatia, Krasnoyarsk, Irkutsk, Omsk, Tomsk]
    • MIDDLE ASIA: Kazakhstan
    • RUSSIAN FAR EAST: Russian Federation [Amur, Kamchatka, Khabarovsk, Primorye, Sakhalin]
    • CHINA: China [Heilongjiang Sheng, Henan Sheng, Hebei Sheng, Hubei Sheng, Jiangsu Sheng, Jilin Sheng, Guangdong Sheng, Guizhou Sheng, Sichuan Sheng, Yunnan Sheng]
    • EASTERN ASIA: Japan (incl. Ryukyus), Korea, Taiwan

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

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

    Europe
    • NORTHERN EUROPE: Denmark, Finland, Ireland, Norway, Sweden, United Kingdom
    • MIDDLE EUROPE: Austria, Belgium, Czech Republic, Germany, Hungary, Netherlands, Poland, Slovakia, Switzerland
    • EASTERN EUROPE: Belarus, Estonia, Latvia, Lithuania, Moldova, Russian Federation, [Astrakhan, Saratov, Volgograd] Russian Federation-European part, [European part] Ukraine
    • SOUTHEASTERN EUROPE: Bosnia and Herzegovina, Bulgaria, Croatia, Greece, Italy, Montenegro, Romania, Serbia, Slovenia
    • SOUTHWESTERN EUROPE: France, Portugal, Spain

    Northern America
    • EASTERN CANADA: Canada [Québec, Nova Scotia, Ontario, Prince Edward Island, New Brunswick, Newfoundland and Labrador]
    • WESTERN CANADA: Canada [Saskatchewan, Alberta, Manitoba, British Columbia]
    • NORTHEASTERN U.S.A.: United States [Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia]
    • NORTH-CENTRAL U.S.A.: United States [Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma, South Dakota, Wisconsin]
    • NORTHWESTERN U.S.A.: United States [Colorado, Idaho, Montana, Oregon, Washington, Wyoming]
    • SOUTHEASTERN U.S.A.: United States [Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, Tennessee, Virginia, District of Columbia]
    • SOUTH-CENTRAL U.S.A.: United States [New Mexico, Texas]
    • SOUTHWESTERN U.S.A.: United States [Arizona, California, Nevada, Utah]
    • NORTHERN MEXICO: Mexico [Sonora, Tamaulipas]
    • SOUTHERN MEXICO: Mexico [Chiapas, Colima, Hidalgo, Jalisco, México, Michoacán de Ocampo, Nayarit, Oaxaca, Tabasco, Veracruz de Ignacio de la Llave, Yucatán, Ciudad de México]

    Pacific
    • NORTH-CENTRAL PACIFIC: United States [Hawaii]

    Southern America
    • CARIBBEAN: Cuba, Dominican Republic, Guadeloupe, Haiti, Jamaica, United States [Puerto Rico]
    • CENTRAL AMERICA: Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama
    • WESTERN SOUTH AMERICA: Colombia, Ecuador, Peru


References:

  1. Botanical Society of the British Isles. BSBI taxon database (on-line resource).
  2. Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45
  3. Erhardt, W. et al. 2008. Der große Zander: Enzyklopädie der Pflanzennamen
  4. Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
  5. FNA Editorial Committee. 2000. Flora of North America. 22:145. Note: lists as "polyrrhiza"
  6. Govaerts, R. & D. G. Frodin. 2002. World checklist and bibliography of Araceae (and Acoraceae).
  7. Holm, L. et al. 1979. A geographical atlas of world weeds
  8. Jørgensen, P. M. & S. León-Yánez, eds. 1999. Catalogue of the vascular plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75
  9. Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.
  10. Landolt, E. 1986. Biosystematic investigations in the family of duckweeds (Lemnaceae). 2. The family of Lemnaceae - a monographic study. Veröff. Geobot. Inst. ETH Stiftung Rübel Zürich 71:243.
  11. Landolt, E. 1996. pers. comm. Note: re. common names
  12. Liberty Hyde Bailey Hortorium. 1976. Hortus third.
  13. Lot, A. et al. 1999. Catálogo de angiospermas acuáticas de México . Cuad. Inst. Biol. 33:40.
  14. Personal Care Products Council. INCI
  15. Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:315.
  16. Stevens, W. D. et al., eds. 2001. Flora de Nicaragua. Monogr. Syst. Bot. Missouri Bot. Gard. 85(1-3).
  17. Tutin, T. G. et al., eds. 1980. Flora europaea. 5:273.
  18. Wofford, B. E. Database of Tennessee vascular plants (on-line resource). URL: https://herbarium.utk.edu/vascular/vascular-database.php?CategoryID=Monocots&FamilyID=Araceae&GenusID=Spirodela&SpeciesID=polyrhiza target='_blank'
  19. 1961. Webster's third new international dictionary.

Check other web resources for Spirodela polyrhiza (L.) Schleid. :


Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2019. Germplasm Resources Information Network (GRIN-Taxonomy).
National Germplasm Resources Laboratory, Beltsville, Maryland. URL: https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?400337. Accessed 22 July 2019.