Polygonum aviculare (Knotgrass) is a species of annual herb in the family Polygonaceae. They have a self-supporting growth form. They are native to SãO Paulo, Minas Gerais, Rio Grande Do Sul, Santa Catarina, Paraná, and Mata Atlântica. They have simple, broad leaves. Flowers are visited by Syritta pipiens, Dock Bug, and Eumerus funeralis. Individuals can grow to 0.26 m.
EOL has data for 28 attributes, including: