Prostrate Knotweed

Polygonum aviculare (Polygonum arenastrum, Polygon

General Status Rank: 
Alien
ELCODE: 
PDPGN0L0A0
Common Name: 
Prostrate Knotweed
Scientific Name: 
Polygonum aviculare (Polygonum arenastrum, Polygon
Synonyms: 
Polygonum arenastrum
Naming References: 
B003
W018
Google image search
Taxonomy
Group: 
Vascular Plant
Kingdom: 
Plantae
Phylum: 
Magnoliophyta
Class: 
Dicotyledoneae
Order: 
Caryophyllales (Polygonales)
Family: 
Polygonaceae
References: 
B003
General Biology

Longevity

annual
References: 
B003

Economic/Human Considerations

edible
References: 
B140
Habitat
near settlements (B003); Fields, uncultivated areas, waste places, roadsides as P aviculare ssp depressum, P.a. subsp aviculare, Roadsides, vacant lots, sidewalks, packed and nondrifting sands, borders of marshes and dunes as P. a. subsp. buxiforme (W019)
References: 
B003
W019-2004
Distribution

Number of Occurrences

DAO-21; CAN-13 Canadian Museum of Nature records=CAN; Agriculture Canada, Ottawa = DAO; some duplication of records likely exists (H155).syn P. arenastrum & P. buxiforme (various subtaxa of P. aviculare) on Oldham 2014 list
Score: 
C
References: 
H155

Historical Distribution

introduced
References: 
B003

Area of Occupancy

Score: 
-
Threats

Intrinsic Vulnerability

Score: 
-
General Status Rank
Rank: 
Alien
Status Rank Description: 
Most of the specimens at DAO were annotated by Wolf & McNeil as P. buxiforme but this species is not recognized as occurring in NT or NU by Kartesz 1999 (B121) or NatureServe Explorer (H155).
S Rank: 
SNA
Decision Process Description: 
Drafted as exotic by E. Haber in 2004 (H155).; Reviewed in 2010, no change.; Reviewed in 2015 by Marilyn Anions; no change
Last Updated: 
July 6, 2015

References

Economic Status

  • Bull, E. L. and J. R. Duncan. (1993) Great Gray Owl (Strix nebulosa).. Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists’ Union. In The Birds of North America, No. 41 (A. Poole and F. Gill, Eds.). - B140 Return

Habitat

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return
  • Flora of North America Editorial Committee (2004) Flora of North America - North of Mexico. Oxford University Press Online Version http://hua.huh.harvard.edu/cgi-bin/Flora/ - W019-2004 Return

Historical Distribution

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return

Longevity

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return

Naming

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return
  • NatureServe: An online encyclopedia of life [web application]. (2001) Version 1.4 . Arlington, Virginia, USA: Association for Biodiversity Information.. Available: http://www.natureserve.org/. (Accessed: June 29, 2001 - W018 Return

NWT Known Subspecies

Flora of North America Editorial Committee (2004) Flora of North America - North of Mexico. Oxford University Press Online Version http://hua.huh.harvard.edu/cgi-bin/Flora/ - W019-2004 Return
,
Marilyn Anions (2005) General Status - review of subset 3 e-mail on 29/03/05. NatureServe Canada, c/o Agriculture and Agri-Food Canada Anionsm /unix [Anionsm@AGR.GC.CA] - H167 Return

Number of Occurrences

  • Erich Haber (2004) Personal Communication- email to B. Dunne on 10/26/2004 with dicot1.. Email archive - H155 Return

Taxonomy

  • Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return