Erect Knotweed (Polygonum erectum) wildspecies.ca

May Be At Risk

Present in regions

Migratory species: Unknown

Taxonomic group:

Vascular plants

Learn more about all species of Vascular plants in Canada.

The General Status ranks do not have legal weight. They are meant to identify the species that may be at risk in Canada.

Access other data on this species on the NatureServe Explorer.

Common Names

English common name:

Erect Knotweed

French common name:

Renouée dressée

Year	English common name	French common name
2005	Erect Knotweed	Renouée dressée
2010	Erect Knotweed	Renouée dressée
2015	Erect Knotweed	Renouée dressée
2020	Erect Knotweed	Renouée dressée

Source: iNaturalist

Scientific Names

Higher Classification:

Superkingdom

EUKARYOTA

Kingdom

PLANTAE

Subkingdom

VIRIDIPLANTAE

Infrakingdom

STREPTOPHYTA

Superphylum

Embryophyta

Phylum

Tracheophyta

Subphylum

Spermatophytina

Superclass

Angiospermae

Class

Magnoliopsida

Superorder

Caryophyllanae

Year	Scientific name	Family	Order
2005	Polygonum erectum	Polygonaceae	Polygonales
2010	Polygonum erectum	Polygonaceae	Polygonales
2015	Polygonum erectum	Polygonaceae	Caryophyllales
2020	Polygonum erectum	Polygonaceae	Caryophyllales

Priority Score

This species is not designated as may be at risk

Trends in rounded national ranks

Year	Rounded National Rank	Description of the change	Reason for change
2005	Imperiled
2010	Unrankable	Changed from or to ranks U, NR, NA.	Improved knowledge of the species.
2015	Apparently Secure	Changed from or to ranks U, NR, NA.	Improved knowledge of the species.
2020	Apparently Secure

Original Ranks:

Canada
2005	May Be At Risk - 2
2010	Undetermined - 5
2015	Apparently Secure - N4
2020	Apparently Secure - N4

Yukon
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Northwest Territories
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Nunavut
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

British Columbia
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Alberta
2005	Undetermined - 5
2010	Undetermined - 5
2015	Apparently Secure - S4
2020	Apparently Secure - S4

Saskatchewan
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Manitoba
2005	Undetermined - 5
2010	Undetermined - 5
2015	Not Present
2020	Not Present

Ontario
2005	May Be At Risk - 2
2010	May Be At Risk - 2
2015	Possibly Extirpated - SH
2020	Possibly Extirpated - SH

Quebec
2005	Undetermined - 5
2010	Undetermined - 5
2015	Unrankable - SU
2020	Vulnerable - S3

New Brunswick
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Nova Scotia
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Prince Edward Island
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Newfoundland and Labrador
2005	Not Present
2010	Not Present
2015
2020

Labrador
2005
2010
2015	Not Present
2020	Not Present

Newfoundland
2005
2010
2015	Not Present
2020	Not Present

Pacific Ocean
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Western Arctic Ocean
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Eastern Arctic Ocean
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Atlantic Ocean
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present