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Common Knotgrass

Polygonum aviculare

Summary 7

Polygonum aviculare or common knotgrass is a plant related to buckwheat and dock. It is also called birdweed, pigweed and lowgrass. It is an annual found in fields and wasteland, with white flowers from June to October.

National distribution 8

Canada
Origin: Exotic

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States
Origin: Exotic

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Sources and Credits

  1. (c) Matt Lavin, some rights reserved (CC BY-SA), http://www.flickr.com/photos/35478170@N08/5143716061
  2. (c) Biopix, some rights reserved (CC BY-NC), http://www.biopix.com/photos/JCS-Polygonum-aviculare-ssp-aviculare-62175.JPG
  3. (c) Biopix, some rights reserved (CC BY-NC), http://www.biopix.com/photos/JCS-Polygonum-aviculare-ssp-aviculare-63424.JPG
  4. (c) Biopix, some rights reserved (CC BY-NC), http://www.biopix.com/photos/JCS-Polygonum-aviculare-ssp-rurivagum-60849.JPG
  5. (c) Biopix, some rights reserved (CC BY-NC), http://www.biopix.com/photos/JCS-Polygonum-aviculare-ssp-aviculare-62174.JPG
  6. (c) Biopix, some rights reserved (CC BY-NC), http://www.biopix.com/photos/JCS-Polygonum-aviculare-ssp-rurivagum-60848.JPG
  7. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Polygonum_aviculare
  8. (c) NatureServe, some rights reserved (CC BY-NC), http://eol.org/data_objects/28994447

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(c) Discover Life and original sources, some rights reserved (CC-BY-NC-SA)

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