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Polygonum amphibium
Polygonum amphibium
Water Knotweed
Photographer: Charles Webber
Organization: California Academy of Sciences
Collection: CalAcademy

ID: 8076 3101 3973 0079 (1998-10-16)

Copyright © 1998 California Academy of Sciences

  • date of photo  Sep 1, 1954
  • location   Lassen Volcanic National Park (Shasta County, California, US)
  • family Polygonaceae
  • CalAcademy slide #   T 2262
  • photo category: Plant - annual/perennial

  • common names   Water Knotweed, Water Smartweed (CF, ITIS )
  • Look for Jepson Manual treatments, maps (University & Jepson Herbaria)
  • View Calflora record for Polygonum amphibium
  • Check the Plants Database (USDA website)
  • View Encyclopedia of Life record for Polygonum amphibium
  • View all photos in CalPhotos of Polygonum amphibium
  • Check Google Images for Polygonum amphibium

  • The photographer's identification Polygonum amphibium has not been reviewed. Click here to review or comment on the identification.

    Using this photo   The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as notification of use is sent to and the image is clearly credited with Charles Webber © California Academy of Sciences. Please send in your email the 16 digit ID number for the image. For other uses, or if you have questions, contact The Manzanita Project


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