Taxon  Report   6747 
Polygonum davisiae  A. Gray   (not an active name; please see Aconogonon davisiae)
Davis Knotweed,  Davis' knotweed
Polygonum davisiae, a dicot, is a perennial herb that is native to California and is also found outside of California, but is confined to western North America.

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 Distribution by County 

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 Plant Characteristics
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Bloom Period
Polygonum davisiae
© 2005 Steve Matson
Red Fir Forest, Lodgepole Forest, Subalpine Forest
Wetlands:Occurs in wetlands in another region, but occurs almost always under natural conditions in non wetlands in California [U.S. Fish & Wildlife Service.]
Genus: Polygonum
Add an Observation of  Polygonum davisiae
Name Status:
Accepted by PLANTS + JM93
TJM2: accepted name: Aconogonon davisiae
 NOTE: Polygonum davisiae is not an active name in the Calflora species table.
 Information about  Polygonum davisiae  from other sources:

Nursery availability and horticultural info on CNPLX

Photos on CalPhotos / Google Images

website references on Google

Original Publication citation. on the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2015. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Apr 01, 2015).

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