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Related to Polygonum aviculare: knotgrass, Polygonum multiflorum
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  • noun

Synonyms for knotgrass

low-growing weedy grass with spikelets along the leaf stems

References in periodicals archive ?
Species of: Polygonum aviculare, Chenopodium album, Sinapis arvensis, Cardaria draba, Galium tricornatm, Acroptilon repense, Descurainia sophia were the most important broad-leaved weeds of irrigated-wheat fields.
Polygonum aviculare or Piper nigrum) and the source of the photographs is not evident to the reader.
Other flowering herbaceous plants include Agalinis tenuifolia, Agastache scrophulariaefolia, Allium vineale, Apocynum cannabinum, Erechtites hieracifolia, Euphorbia maculata, Monarda clinopodia (on the edge of Farmer's Field bordered by Lily Meadow), Penthorum sedoides, Physalis longifolia, Polygonum aviculare, Potentilla norvegica, P.
nutans, Gleditsia triacanthos, Hypericum perforatum, Lactuca biennis, Lepidium campestre, Polygonum aviculare, P.