Calflora
Taxon  Report   6750    
Polygonum douglasii  Greene  ssp. douglasii   
(no longer an active name)
Douglas' knotweed
Polygonum douglasii ssp. douglasii, a dicot, is an annual herb that is native to California, and is also found elsewhere in North America and beyond.

Bloom Period
Family: POLYGONACEAE  
Genus: Polygonum
Parent: Polygonum douglasii
Wetlands: Occurs usually in non wetlands, occasionally in wetlands
Name Status:
Accepted by PLANTS

JEF other name:
Polygonum douglasii

Alternate Names:
PLANTS: Polygonum buxiforme var. montanum
PLANTS: Polygonum douglasii var. latifolium
PLANTS: Polygonum emaciatum
. . .
NOTE: Polygonum douglasii ssp. douglasii is no longer an active name.
More information about  Polygonum douglasii ssp. douglasii
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (PODOD4)


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: Dec 15, 2019).