Calflora
Taxon  Report   11033    
Polygonum austiniae  Greene
Rebecca austin's knotweed
Check for photos on
CalPhotos / Calflora
Polygonum austiniae, a dicot, is an annual herb that is native to California, is also found outside of California, but is confined to western North America.

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

Plant Characteristics
and Associations



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

PLANTS accepted name:
Polygonum douglasii ssp. austiniae

Alternate Names:
ICPN: Polygonum douglasii ssp. austiniae
More information about  Polygonum austiniae
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

USDA PLANTS Profile (PODOA2)

Search efloras.org (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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available: https://www.calflora.org/   (Accessed: Nov 13, 2018).

The information on this page comes from diverse sources. None of the links are sponsored.