Home/Species/ Creeping Himalayan Knotweed

Persicaria posumbu

(Buch.-Ham. ex D. Don) H. Gross

Creeping Himalayan Knotweed

GNRUnranked Found in 3 roadless areas NatureServe Explorer →

GNRUnrankedGlobal Rank

Identity

Unique IDELEMENT_GLOBAL.2.1256009

Element CodePDPGN0Z030

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderPolygonales

FamilyPolygonaceae

GenusPersicaria

Synonyms

Persicaria caespitosa(Blume) NakaiPolygonum caespitosumBlumePolygonum cespitosumBlume

Concept Reference

Atha, D. and S. Rall. 2020. First report of Persicaria posumbu (Polygonaceae) for North America. Phytoneuron 86: 1-7.

Taxonomic Comments

"Persicaria posumbu, a smartweed from eastern Asia, is naturalized in populations on the Delaware River floodplain in New York and New Jersey" (Atha and Rall 2020) and in Pennsylvania (Weakley 2022).

Ecology & Habitat

Other Nations (1)

United StatesNNA

Province	Rank	Native
New York	SNA	No
Virginia	SNA	No
New Jersey	SNA	No
Pennsylvania	SNA	No

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (3)

Virginia (2)

Area	Forest	Acres
Laurel Fork	George Washington National Forest	9,967
The Priest	George Washington National Forest	5,737

West Virginia (1)

Area	Forest	Acres
Laurel Fork	Monongahela National Forest	1,172

References (2)

Atha, D. and S. Rall. 2020. First report of <i>Persicaria posumbu </i>(Polygonaceae) for North America. Phytoneuron 86: 1-7.
Weakley, A.S., and Southeastern Flora Team. 2022. Flora of the southeastern United States. Edition of April 24, 2022. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. 2022 pp.