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Famiglia: Lemnaceae Genere: Spirodela
Specie della flora italiana: Spirodela oligorrhiza Kurz
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 Spirodela polyrhiza USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 446. |
 Spirodela polyrhiza Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Spirodela polyrhiza Credit: Photo by Franco Giordana |
 Spirodela polyrhiza Credit: Photo by Franco Giordana |
 Spirodela polyrhiza Credit: Photo by Franco Giordana |
 Spirodela polyrrhiza Robert H. Mohlenbrock USDA-NRCS PLANTS Database / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. - Not copyrighted image |
 Spirodela polyrrhiza Robert H. Mohlenbrock USDA-NRCS PLANTS Database / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. - Not copyrighted image |
 Spirodela polyrrhiza USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 446. |
