Taxon  Report   6766 
Polygonum polygaloides  Meissner  ssp. confertiflorum  (Piper) J. Hickman
Dense knotweed,  Fruitleaf knotweed
Polygonum polygaloides ssp. confertiflorum
© 2008 Keir Morse
Click on a photo to see it bigger.
Polygonum polygaloides ssp. confertiflorum
© 2011 Barry Breckling
Polygonum polygaloides ssp. confertiflorum
© 2014 Sierra Pacific Industries
Polygonum polygaloides ssp. confertiflorum, 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.

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Plant Characteristics
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Bloom Period
Polygonum polygaloides ssp. confertiflorum
© 2008 Keir Morse
Genus: Polygonum
Parent Record Polygonum polygaloides
Northern Juniper Woodland, wetland-riparian
Distribution by County 

Add an Observation of  Polygonum polygaloides ssp. confertiflorum

Name Status:
Accepted by TJM2 + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Polygonum confertiflorum
PLANTS: Polygonum imbricatum
PLANTS: Polygonum kelloggii var. confertiflorum
PLANTS: Polygonum watsonii
More information about  Polygonum polygaloides ssp. confertiflorum
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

Original Publication citation (ITIS)


Search the International Plants Names Index

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: Feb 18, 2018).

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