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Bernard DUPONT   cc-by-sa-2.0

Pistia stratiotes (water lettuce) is a species of perennial herb in the family Araceae. It has a self-supporting growth form. It is associated with freshwater habitat. It is native to the contiguous United States,Puerto Rico,U.S. Virgin Islands,South America,Maranhao,Alagoas,Rio Grande do Norte,Amapá,Cerrado,Pantanal,Mato Grosso do Sul,Bahia,Mato Grosso,Pará,Minas Gerais,Paraná,São Paulo,Sergipe,Pernambuco,Rio Grande do Sul,Mata Atlântica,Acre (Brazil),Ceará,Santa Catarina,Amazônia,Amazônia,Rio de Janeiro,Goiás,Piauí,Espirito Santo,Caatinga иParaíba. It has simple, broad leaves. It is a photoautotroph. Individuals can grow to 0.2 m.

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EOL has data for 23 attributes, including:

Known occurrences, collected specimens and observations of water lettuce