Taxon  Report   11040 
Polygonum spergulariiforme  Meisn. ex Small
Spurry knotweed
Polygonum spergulariiforme
© 2008 Sierra Pacific Industries
Click on a photo to see it bigger.
Polygonum spergulariiforme
© 2008 Sierra Pacific Industries
Polygonum spergulariiforme
© 2008 Sierra Pacific Industries
Polygonum spergulariiforme, a dicot, is an annual herb that is native to California and is also found outside of California, but is confined to western North America.

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Polygonum spergulariiforme
© 2008 Sierra Pacific Industries
Genus: Polygonum
Yellow Pine Forest, Chaparral, Coastal Prairie
Habitat: slopes
Wetlands: Occurs usually in non wetlands, occasionally in wetlands
AFFINITY to serpentine soil:   3 (strong indicator)   [Safford et al 2005]
Distribution by County 

Add an Observation of  Polygonum spergulariiforme

Name Status:
Accepted by TJM2
PLANTS accepted name: Polygonum douglasii ssp. spergulariiforme
Alternate Names:
(according to)

TJM2: Polygonum douglasii ssp. spergulariiforme
More information about  Polygonum spergulariiforme
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images

Jepson eFlora

Records from the Consortium of California Herbaria


Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google

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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Mar 19, 2018).

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