Native Plants
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Polygonum douglasii ssp. austiniae
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray
Austin Knotweed, Mrs. Austin's Knotweed, Rebecca Austin's Knotweed
Polygonaceae (Buckwheat family)
Synonym(s): Polygonum austiniae, Polygonum douglasii var. austiniae
USDA Symbol: PODOA2
USDA Native Status: L48 (N), CAN (N)
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Plant Characteristics
Duration: AnnualHabit: Herb
Fruit Type: Achene
Size Notes: Up to about 8 inches tall.
Bloom Information
Bloom Color: White , Green , PurpleBloom Time: Jun , Jul , Aug , Sep
Bloom Notes: Green or purple, with narrow whitish margins.
Distribution
USA: CA , ID , MT , NV , OR , WA , WYCanada: AB , BC
Native Habitat: Dry to moist flats on banks, sagebrush plains and ponderosa pine forests.
National Wetland Indicator Status
Region: | AGCP | AK | AW | CB | EMP | GP | HI | MW | NCNE | WMVE |
Status: | FACU | FACU | FACU |
Web Reference
Webref 30 - Calflora (2018) CalfloraWebref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Polygonum douglasii ssp. austiniae in USDA PlantsFNA: Find Polygonum douglasii ssp. austiniae in the Flora of North America (if available)
Google: Search Google for Polygonum douglasii ssp. austiniae
Metadata
Record Modified: 2020-11-12Research By: CBR