Calflora
Taxon  Report   6746    
Polygonum cuspidatum  Siebold & Zucc.  
(no longer an active name)
Japanese knotweed
Polygonum cuspidatum, a dicot, is a perennial herb that is not native to California; it has been naturalized in the wild.
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Observation Search
(1 records)
one or more occurrences
within a 7.5-minute quadrangle
Family: POLYGONACEAE  
Genus: Polygonum

Communities: escaped cultivar
Name Status:
Accepted by PLANTS

ICPN other name:
Fallopia japonica

Alternate Names:
PLANTS: Fallopia japonica
PLANTS: Pleuropterus cuspidatus
PLANTS: Pleuropterus zuccarinii
. . .
NOTE: Polygonum cuspidatum is no longer an active name.
More information about  Polygonum cuspidatum

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]. 2020. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Aug 10, 2020).