An annual plant, Polygonum aviculare, found in fields and wasteland
Paspalum distichum, a weedy perennial grass of wet areas
Polygonum aviculare (common knotgrass)
Amaranthus species
Portulaca bicolor, of Australia
Heracleum sphondylium
Any of various weedy plants sometimes used as pig fodder
Chenopodium album, white goosefoot