PLANTS Profile for Polygonum douglasii ssp. austiniae (Austin knotweed)

Name Search
name search type enter a search name
	State Search
	Advanced Search
	Search Help


	Alternative Crops
	Characteristics
	Classification
	Cover Crops
	Culturally Significant
	Distribution Update
	Documentation
	Fact Sheets & Plant Guides
	Introduced, Invasive, and Noxious Plants
	Links
	Threatened & Endangered
	Wetland Indicator Status



	40,000+ Plant Images
	Submit Your Digital Images



	Complete PLANTS Checklist
	State PLANTS Checklist
	Advanced Search Download
	Symbols for Unknown Plants
	NRCS State GSAT Lists
	NRCS State Plants Lists



	Crop Nutrient Tool
	Ecological Site Information System
	PLANTS Identification Keys
	Plant Materials Web Site
	Plant Materials Publications
	USDA Plant Hardiness Map

Printer-Friendly

PLANTS Profile

Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray
Austin knotweed

Symbol:

PODOA2

Group:

Dicot

Family:

Polygonaceae

Duration:

Annual

Growth Habit:

Forb/herb

Native Status:

L48		N
CAN		N

More Information:

Images:
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray

See all the Polygonum thumbnails at the PLANTS Gallery

Synonyms:
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray

	POAU2	Polygonum austiniae Greene
	PODOA	Polygonum douglasii Greene var. austiniae (Greene) M.E. Jones

Distribution:
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray


View Native Status

See U.S. county distributions (when available) by clicking on the map or the linked states below:
USA (CA, ID, MT, NV, OR, WA, WY), CAN (AB, BC)

Related Taxa:
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray

View 33 genera in Polygonaceae, 80 species in Polygonum, 7 subspecies in Polygonum douglasii Greene

Classification:
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray

Click on a scientific name below to expand it in the PLANTS Classification Report.


Kingdom	Plantae – Plants
Subkingdom	Tracheobionta – Vascular plants
Superdivision	Spermatophyta – Seed plants
Division	Magnoliophyta – Flowering plants
Class	Magnoliopsida – Dicotyledons
Subclass	Caryophyllidae
Order	Polygonales
Family	Polygonaceae – Buckwheat family
Genus	Polygonum L. – knotweed
Species	Polygonum douglasii Greene – Douglas' knotweed
Subspecies	Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray – Austin knotweed

Threatened and Endangered Information:
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray

The related entities and synonyms italicized and indented below are listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.

Iowa:
Polygonum douglasii
Douglas' knotweed		Endangered
Maine:
Polygonum douglasii
Douglas' knotweed		Threatened
New Hampshire:
Polygonum douglasii
Douglas' knotweed		Threatened
New York:
Polygonum douglasii
Douglas knotweed		Threatened
Vermont:
Polygonum douglasii
Douglas knotweed		Endangered
Washington:
Polygonum austiniae
Austin's knotweed		Sensitive

Wetland Indicator Status:

NOTE: On June 1, 2012, the 2012 National Wetland Plant List superseded the information below (see Federal Register, May 9, 2012, 77(90): 27210-27214[https://federalregister.gov/a/2012-11176]). For updated wetland information about this species, see the latest wetland list.

Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray

Polygonum douglasii:

Nat. Ind.

Reg. 1

Reg. 2

Reg. 3

Reg. 4

Reg. 5

Reg. 6

Reg. 7

Reg. 8

Reg. 9

Reg. 0

Reg. A

Reg. C

Reg. H

UPL,FAC

UPL

FACU

FAC

FACU-

UPL

FACU

Interpreting Wetland Indicator Status

More Accounts and Images:
Polygonum douglasii Greene ssp. austiniae (Greene) A.E. Murray

View species account and distribution map from Flora of North America (FNA).

View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 524553.

View species account and distribution map from Jepson Interchange (University of California - Berkeley).

View photographs and distribution from University of Washington Burke Museum.

Time Generated: 05/22/2013 10:56 AM CDT