Polygonum aviculare

Polygonum aviculare or common knotgrass is a plant related to buckwheat and dock. It is also called prostrate knotweed, birdweed, pigweed and lowgrass. It is an annual found in fields and wasteland, with white flowers from June to October. It is widespread across many countries in temperate regions, apparently native to Eurasia, naturalized in temperate parts of the Southern Hemisphere.

Common knotgrass
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Polygonaceae
Genus: Polygonum
Species:
P. aviculare
Binomial name
Polygonum aviculare
L. 1753
Synonyms
Synonymy
  • Avicularia vulgaris Didr.
  • Centinodium axillare Montandon
  • Polygonum agreste Sumner, non Polygonum agreste Sumnev.
  • Polygonum aphyllum Krock.
  • Polygonum araraticum Kom.
  • Polygonum berteroi Phil.
  • Polygonum buxiforme Small
  • Polygonum ganderbalense Munshi & Javeid
  • Polygonum heterophyllum Lindm.
  • Polygonum monspeliense Thiéb.-Bern. ex Pers.
  • Polygonum neglectum Besser
  • Polygonum planum Skvortsov
  • Polygonum polyneuron Franch. & Sav.
  • Polygonum prostratum Skvortsov
  • Polygonum procumbens Gilib.
  • Polygonum retinerve Vorosch.
  • Polygonum rubescens Small
  • Polygonum scythicum Klokov
  • Polygonum striatum K. Koch
  • Polygonum uruguense H. Gross
  • Polygonum argenteum Ehrenb. ex Meisn.
  • Polygonum argenteum Skvortsov
  • Polygonum fusco-ochreatum Kom.
  • Polygonum stans Kitag.
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