Polygonum douglasii ssp. douglasii Calflora

Taxon Report

Polygonum douglasii Greene ssp. douglasii

(not an active name)

Douglas' knotweed

2008 Steve Matson

Polygonum douglasii ssp. douglasii is an annual herb that is native to California, and also found elsewhere in North America and beyond.

also called Polygonum douglasii


	Plant Range Observation Search ~822 records in California Plant Characteristics

Bloom Period

Photos on Calflora


Parent:	Polygonum douglasii
Genus:	Polygonum
Family:	Polygonaceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Wetlands: Occurs usually in non wetlands, occasionally in wetlands

Name Status:
Accepted by PLANTS

Alternate Names:


PLANTS	Polygonum buxiforme var. montanum
JM93	Polygonum douglasii var. douglasii
PLANTS	Polygonum douglasii var. latifolium
PLANTS	Polygonum emaciatum
PLANTS	Polygonum montanum
...

Information about Polygonum douglasii ssp. douglasii from other sources


Nursery availability from CNPLX Commercial availability unknown. USDA PLANTS Profile (PODOD4) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	ITIS Original Publication citation International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape BONAP Distribution Map Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	Add an Observation Location Suitability Planting Guide Distribution by County
photos / record / common / links 0000 0000 0108 2178:! 2008 Steve Matson:! null:!

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 11/21/2024).