Roadless Areas
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Polygonum polygaloides

Meisn.

White-margin Knotweed

G4Apparently Secure (G4G5) Found in 15 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.137885
Element CodePDPGN0L1Y0
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
Milkwort Knotweed (EN) Renouée faux-polygale (FR)
Concept Reference
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.
Taxonomic Comments
This record is for a broad treatment of Polygonum polygaloides, including the subspecies confertiflorum, esotericum, kelloggii and polygaloides, as recognized in the FNA (2005, vol. 5) treatment of Costea et al. and Kartesz (1994, 1999). The FNA treatment notes, "Alternatively, P. polygaloides could be recognized in the narrow sense and the three other taxa could be treated as subspecies of a separate P. kelloggii, the earliest available binomial."
Conservation Status
Rank MethodExpertise without calculation
Review Date2015-06-02
Change Date1991-07-02
Edition Date1991-07-03
Edition AuthorsBroaddus, L.
Rank Reasons
Common in at least some areas. Whether or not species is common enough to be G5 is not currently known.
Range Extent Comments
AB, BC, CA, OR, WA, ID, NV, UT, MT, WY, CO.
Ecology & Habitat

Habitat

Wet places.
Other Nations (2)
United StatesNNR
ProvinceRankNative
WashingtonSNRYes
New MexicoSNRYes
IdahoSNRYes
CaliforniaSNRYes
ArizonaSNRYes
UtahSNRYes
NevadaS3Yes
OregonSNRYes
ColoradoS3Yes
WyomingSNRYes
MontanaS3Yes
CanadaN4
ProvinceRankNative
AlbertaS3Yes
SaskatchewanS3Yes
British ColumbiaS4Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (15)
California (10)
AreaForestAcres
Castle PeakTahoe National Forest14,974
Domeland Add.Sequoia National Forest3,046
Granite ChiefTahoe National Forest6,546
Hall Natural AreaInyo National Forest5,236
Heart LakeLassen National Forest9,349
Hoover - NorthHumboldt-Toiyabe National Forest1,574
Iceberg - Mill CreekHumboldt-Toiyabe National Forest26,988
Middle YubaTahoe National Forest7,379
Raymond PeakEldorado National Forest2,518
Wonoga Pk.Inyo National Forest11,272
Oregon (1)
AreaForestAcres
Snake RiverWallowa-Whitman National Forest31,229
Utah (2)
AreaForestAcres
Big Bear CreekManti-Lasal National Forest28,440
Public GroveWasatch-Cache National Forest6,341
Washington (1)
AreaForestAcres
QuartzWenatchee National Forest8,550
Wyoming (1)
AreaForestAcres
Encampment River AdditionMedicine Bow-Routt National Forest4,996
References (2)
  1. 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.
  2. 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.