Alaska Knotweed

Polygonum humifusum (Polygonum humifusum ssp cauri

General Status Rank: 
Secure
ELCODE: 
PDPGNL0Q0
Common Name: 
Alaska Knotweed
Scientific Name: 
Polygonum humifusum (Polygonum humifusum ssp cauri
Synonyms: 
Polygonum caurianum
Polygonum humifusum ssp caurianu
Naming References: 
B003
W018
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Taxonomy
Group: 
Vascular Plant
Kingdom: 
Plantae
Phylum: 
Magnoliophyta
Class: 
Dicotyledoneae
Order: 
Caryophyllales (Polygonales)
Family: 
Polygonaceae
References: 
B036
General Biology

Longevity

annual
References: 
B003
Habitat
wet, gravelly pond margins and lake shores
References: 
B036
Distribution

Ecozones

Southern Arctic, Taiga Plains
References: 
B003

Distribution

0.15
Score: 
G
References: 
B003

Number of Occurrences

6 (B003); DAO-0; CAN-3 (H155) Oldham (2013) has 4 records - 3 locations (Inuvik, Fort Simpson & Yellowknife) as syn P. caurianum; P. caurianum syn Polygonum humifusum subsp. Caurianum
Score: 
BC
References: 
B003
H155

Area of Occupancy

Score: 
-
Threats

Threats

Score: 
C

Intrinsic Vulnerability

Score: 
-
General Status Rank
Rank: 
Secure
Status Rank Description: 
- Small regional distribution and present in two ecozones.
S Rank: 
S4
Decision Process Description: 
Drafted by E Haber (2005); Reviewed in 2010, no change.; Reviewed in 2015 by Marilyn Anions; modified from sensitive to secure (more sites)
Last Updated: 
July 23, 2015

References

Ecozones

  • 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

Habitat

  • McJannet CL, Argus GW and Cody WJ (1995) Rare Vascular Plants in the Northwest Territories. Canadian Museum of Nature Syllogeus 73:1-104. RWED Library Call #QK86.C3M3 - B036 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

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
,
Kartesz, J. T. (1999) Synthesis of the North American Flora. North Carolina Botanical Garden North Carolina Botanical Garden, University of North Carolina Version 1.0 RWED Office, Yellowknife; Order from http://ucjeps.berkeley.edu/meacham/synthesis - DD2 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

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

Range Extent

  • 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

Taxonomy

  • McJannet CL, Argus GW and Cody WJ (1995) Rare Vascular Plants in the Northwest Territories. Canadian Museum of Nature Syllogeus 73:1-104. RWED Library Call #QK86.C3M3 - B036 Return