Home/Species/ Giant Knotweed

Reynoutria sachalinensis

(F. Schmidt) Nakai

Giant Knotweed

GNRUnranked Found in 1 roadless area NatureServe Explorer →

GNRUnrankedGlobal Rank

Identity

Unique IDELEMENT_GLOBAL.2.151038

Element CodePDPGN0L230

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicoccurs (regularly, as a native taxon) in multiple nations

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderPolygonales

FamilyPolygonaceae

GenusReynoutria

Synonyms

Fallopia sachalinensis(F. Schmidt ex Maxim.) Dcne.Polygonum sachalinenseF. Schmidt ex Maxim.

Other Common Names

giant knotweed (EN) Renouée de Sakhaline (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

FNA (vol. 5, 2005) transfers Polygonum sachalinense to Fallopia sachalinensis. Schuster et al. (2011) transfer F. sachalinensis to Reynoutria sachalinensis.

Conservation Status

Change Date1994-03-22

Ecology & Habitat

Other Nations (2)

United StatesNNA

Province	Rank	Native
Louisiana	SNA	No
Connecticut	SNA	No
New York	SNA	No
Washington	SNA	No
West Virginia	SNA	No
North Carolina	SNA	No
Maine	SNA	No
Colorado	SNA	No
California	SNA	No
Rhode Island	SNA	No
Pennsylvania	SNA	No
Michigan	SNA	No
Tennessee	SNA	No
Delaware	SNA	No
Illinois	SNA	No
Maryland	SNA	No
Oregon	SNA	No
Virginia	SNA	No
Massachusetts	SNA	No
Idaho	SNA	No
New Jersey	SNA	No
Wisconsin	SNA	No
Ohio	SNA	No
Kentucky	SNA	No
Vermont	SNA	No

CanadaNNA

Province	Rank	Native
Nova Scotia	SNA	No
Island of Newfoundland	SNA	No
Prince Edward Island	SNA	No
Ontario	SNA	No
British Columbia	SNA	No
New Brunswick	SNA	No
Quebec	SNA	No

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (1)

West Virginia (1)

Area	Forest	Acres
Little Mountain	Monongahela National Forest	8,172

References (3)

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.
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.
Schuster, T.M., K.L. Wilson, and K.A. Kron. 2011. Phylogenetic relationships of Muehlenbeckia, Fallopia, and Reynoutria (Polygonaceae) investigated with chloroplast and nuclear sequence data. International Journal of Plant Sciences 172(8): 1053-1066.