Setaria parviflora (Knotroot Foxtail) is a species of perennial herb in the family True grasses. They have a self-supporting growth form. They are native to U.S. Virgin Islands, The Contiguous United States, Puerto Rico, Mato Grosso Do Sul, Pantanal, Pernambuco, Rio Grande Do Sul, SãO Paulo, Alagoas, Maranhao, Mata AtlâNtica, ParaíBa, Bahia, AmazôNia, Rio De Janeiro, Pará, Caatinga, Piauí, Cerrado, Minas Gerais, Santa Catarina, AmazôNia, Paraná, Distrito Federal, Mato Grosso Do Sul, Espirito Santo, GoiáS, Rio Grande Do Sul, Distrito Federal, Acre (Brazil), Rio De Janeiro, Cerrado, Santa Catarina, Rio Grande Do Norte, Paraná, Caatinga, Roraima, Tocantins, Bahia, SãO Paulo, Amapá, Maranhao, Pernambuco, Piauí, Mato Grosso, Sergipe, Mata AtlâNtica, Pará, Minas Gerais, AmazôNia, Alagoas, ParaíBa, Mata AtlâNtica, Paraná, Rio Grande Do Sul, and Eastern North America. They have simple, broad leaves. Flowers are visited by Barred Yellow. Individuals can grow to 0.25 m.
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