Taxon  Report   6772 
Polygonum ramosissimum  Michaux
Bushy knotweed,  Yellow knotweed
Polygonum ramosissimum
© 2015 Daniel Boone
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Polygonum ramosissimum
© 2015 Daniel Boone
Polygonum ramosissimum
© 2015 Daniel Boone
Polygonum ramosissimum, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Polygonum ramosissimum
© 2015 Daniel Boone
weed, characteristic of disturbed places
Habitat: disturbed [Walker]
Wetlands:Usually occurs in non wetlands, but occasionally found in wetlands [U.S. Fish & Wildlife Service.]
Distribution by County 

Add an Observation of  Polygonum ramosissimum

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

TJM2: Polygonum patulum
More information about  Polygonum ramosissimum
Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

Search (Flora of North America)

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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 24, 2016).

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