Cyperus polystachyos (Manyspike Flatsedge) is a species of shrub in the family sedges. It has a self-supporting growth form. It is associated with freshwater habitat. Manyspike Flatsedge is native to Puerto Rico, Pacific Basin excluding Hawaii, Hawaii, the contiguous United States, U.S. Virgin Islands, Distrito Federal, Mato Grosso, Rio Grande do Sul, Paraíba, Pará, Paraná, Alagoas, Minas Gerais, Tocantins, Amazônia, Caatinga, Sergipe, Amazônia, Espirito Santo, Rio Grande do Norte, Pernambuco, Goiás, São Paulo, Rio de Janeiro, Piauí, Mata Atlântica, Ceará, Pampa, Cerrado, Mato Grosso do Sul, Roraima, Maranhao, Pantanal, Santa Catarina, Rondônia, and Bahia. It has simple, broad leaves and green flowers. It is a photoautotroph. Individuals can grow to 0.49 m.
EOL has data for 69 attributes, including: