Polygonum aviculare

L.

Yard Knotweed

G5Secure Found in 32 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.785601
Element CodePDPGN0L370
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPolygonales
FamilyPolygonaceae
GenusPolygonum
Other Common Names
Prostrate Knotweed (EN) Renouée des oiseaux (FR)
Concept Reference
Costea, M. and F. J. Tardif. 2003. Nomenclatural changes in the genus Polygonum section Polygonum (Polygonaceae). Sida 20(3):987-997.
Taxonomic Comments
This record represents the broad concept of Polygonum aviculare following FNA (vol. 5, 2005) that includes taxa that Kartesz (1994, 1999) treats as distinct species. This treatment used by Costea and Tardif (2003) and FNA (vol. 5, 2005) recognizes the following subspecies in P. aviculare: P. aviculare ssp. aviculare (= P. aviculare), P. aviculare ssp. boreale (= P. boreale), P. aviculare ssp. buxiforme (= P. buxiforme), P. aviculare ssp. depressum (=P. arenastrum), P. aviculare ssp. neglectum, and P. aviculare ssp. rurivagum. In contrast, Kartesz (1994, 1999) recognize P. aviculare, P. arenastrum, P. bellardii, P. boreale, P. buxiforme, and P. franktonii.
Conservation Status
Rank MethodExpertise without calculation
Review Date2016-08-27
Change Date2016-08-27
Ecology & Habitat
Other Nations (2)
CanadaN5
ProvinceRankNative
Northwest TerritoriesS4Yes
Nova ScotiaS5Yes
Yukon TerritoryS4Yes
NunavutSUYes
Prince Edward IslandSNANo
AlbertaSUYes
British ColumbiaSNANo
SaskatchewanSNRYes
OntarioS4Yes
QuebecSNRYes
LabradorSNRYes
Island of NewfoundlandSNANo
ManitobaSUYes
New BrunswickSNANo
United StatesNNR
ProvinceRankNative
MinnesotaSNANo
UtahSNRYes
MississippiSNRYes
New MexicoSNRYes
MaineSNRYes
VirginiaSNRYes
IndianaSUYes
South DakotaSNRYes
MontanaSNRYes
AlaskaSNRYes
FloridaSNRYes
WashingtonSNRYes
ColoradoSNRYes
MarylandSNRYes
North DakotaSNRYes
NebraskaSNRYes
WisconsinSNRYes
KentuckySNRYes
KansasSNRYes
New JerseySNRYes
IdahoSNRYes
West VirginiaSNRYes
LouisianaSNRYes
VermontSNANo
ArizonaSNRYes
NevadaSNANo
TexasSNRYes
North CarolinaSNRYes
MichiganSNRYes
IowaSNRYes
AlabamaSNRYes
ConnecticutSNRYes
TennesseeSNRYes
South CarolinaSNRYes
ArkansasSNRYes
District of ColumbiaSNRYes
OklahomaSNRYes
CaliforniaSNRYes
MassachusettsSNRYes
IllinoisSNANo
OregonSNRYes
PennsylvaniaSNRYes
WyomingSNANo
OhioSNRYes
New YorkSNRYes
GeorgiaSNRYes
New HampshireSNRYes
HawaiiSNANo
Rhode IslandSNANo
DelawareSNRYes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (32)
Alaska (3)
AreaForestAcres
College FiordChugach National Forest1,130,818
Fidalgo-GravinaChugach National Forest257,968
RhineTongass National Forest23,010
Arizona (2)
AreaForestAcres
Hell HoleApache-Sitgreaves National Forests15,512
Lower San FranciscoApache-Sitgreaves National Forests59,310
California (11)
AreaForestAcres
CalienteCleveland National Forest5,953
Coyote NorthInyo National Forest11,932
Devil's Gate (CA)Humboldt-Toiyabe National Forest9,946
Hoover - Mt.olsenHumboldt-Toiyabe National Forest624
Mt. JacksonHumboldt-Toiyabe National Forest20,721
Mt. OlsenInyo National Forest2,161
Rock Creek WestInyo National Forest3,626
San DimasAngeles National Forest7,160
Sespe - FrazierAngeles National Forest4,254
SugarloafSan Bernardino National Forest8,206
WestforkAngeles National Forest4,407
Montana (2)
AreaForestAcres
Big Snowy Mountains WsaLewis and Clark National Forest88,003
Reservation DivideLolo National Forest16,908
Nevada (8)
AreaForestAcres
Mystic (NV)Humboldt-Toiyabe National Forest5,644
Pine Grove SouthHumboldt-Toiyabe National Forest88,945
Rose - Alum CreekHumboldt-Toiyabe National Forest853
Rose - Davis Mdw.Humboldt-Toiyabe National Forest2,361
Rose - Dutch LouieHumboldt-Toiyabe National Forest363
Rose - NortheastHumboldt-Toiyabe National Forest550
Rough CreekHumboldt-Toiyabe National Forest8,476
South SchellHumboldt-Toiyabe National Forest125,614
New Mexico (1)
AreaForestAcres
Hell HoleGila National Forest19,553
Oregon (1)
AreaForestAcres
Maiden PeakDeschutes National Forest26,432
Utah (3)
AreaForestAcres
Bull ValleyDixie National Forest10,911
East MountainManti-Lasal National Forest30,705
Moody WashDixie National Forest31,835
Virginia (1)
AreaForestAcres
Bear CreekJefferson National Forest18,274
References (3)
  1. Costea, M. and F. J. Tardif. 2003. Nomenclatural changes in the genus <i>Polygonum </i> section <i>Polygonum</i> (Polygonaceae). Sida 20(3):987-997.
  2. Flora of North America Editorial Committee (FNA). 2005. Flora of North America north of Mexico. Vol. 5. Magnoliophyta: Caryophyllidae: Caryophyllales, Polygonales, and Plumbaginales. Oxford Univ. Press, New York. vii + 656 pp.
  3. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.