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Cyperus rigens is a species of grass in the family sedges. It is associated with freshwater habitat. It is native to Rio Grande do Sul, Cerrado, Espirito Santo, Goiás, Mata Atlântica, Caatinga, Santa Catarina, Piauí, Rio de Janeiro, Pernambuco, Bahia, São Paulo, Tocantins, Paraná, Minas Gerais, and Paraíba. Cyperus rigens is a photoautotroph.

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EOL has data for 7 attributes, including:

Known occurrences, collected specimens and observations of Cyperus rigens J. Presl & C. Presl. View this species on GBIF