Calflora
Taxon  Report   6734    
Polygonum amphibium  L.  
(no longer an active name)
Swamp knotweed,  Water knotweed, Water smartweed
Polygonum amphibium, a dicot, is a perennial herb that is native to California, is also found elsewhere in North America and beyond.

Bloom Period
Family: POLYGONACEAE  
Genus: Polygonum
Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Subalpine Forest, Foothill Woodland, Chaparral, Valley Grassland, (many plant communities), wetland-riparian
Name Status:
Accepted by PLANTS

ICPN other name:
Persicaria amphibia

 
NOTE: Polygonum amphibium is no longer an active name.
More information about  Polygonum amphibium
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (POAM8)


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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Oct 15, 2019).