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Polygonum lapathifolium L.
Curlytop knotweed



General Information
Symbol: POLA4
Group: Dicot
Family: Polygonaceae
Duration: Annual
Growth Habit: Forb/herb
Native Status: CAN   I
GL   I
SPM   I
AK   I
L48   N
Data Source and Documentation
Alabama"Alaska"Arizona"Arkansas"California"Colorado"Connecticut"Delaware"DistrictFlorida"Georgia"Idaho"Illinois"Indiana"Iowa"Kansas"Kentucky"Louisiana"Maine"Massachusetts"Michigan"Minnesota"Mississippi"Missouri"Montana"Nebraska"Nevada"NewNewNewNewNorthNorthOhio"Oklahoma"Oregon"Pennsylvania"RhodeSouthTennessee"Texas"Utah"Vermont"Virginia"Washington"WestWisconsin"Wyoming"
Distribution Map
green distribution legend Present blank legend Absent/Unreported

See U.S. county distributions (when available) by clicking on the map or the linked states below:

USA (AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY), CAN (AB, BC, LB, MB, NB, NF, NS, NT, ON, PE, QC, SK, YT), DEN (GL), FRA (SPM)

Images

click on a thumbnail to view an image, or see all the Polygonum thumbnails at the Plants Gallery

Synonyms

Symbol Scientific Name
PONO5 Polygonum nodosum Pers.
POON Polygonum oneillii Brenckle
POTO3 Polygonum tomentosum Schrank
PETO5 Persicaria tomentosa (Schrank) E.P. Bicknell
POPEO2 Polygonum pensylvanicum L. ssp. oneillii (Brenckle) Hultén
POLAP2 Polygonum lapathifolium L. var. prostratum Wimm.
POLAN2 Polygonum lapathifolium L. var. nodosum (Pers.) Small
PEIN11 Persicaria incarnata (Elliott) Small
PELA22 Persicaria lapathifolia (L.) Gray
POIN22 Polygonum incanum F.W. Schmidt
POLAO Polygonum lapathifolium L. var. ovatum A. Braun
POLAP Polygonum lapathifolium L. ssp. pallidum (With.) Fr.
POSC15 Polygonum scabrum Moench
POLAS Polygonum lapathifolium L. var. salicifolium Sibth.
POIN19 Polygonum incarnatum Elliott
POLAI Polygonum lapathifolium L. var. incanum (F.W. Schmidt) W.D.J. Koch

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Caryophyllidae
Order Polygonales
Family Polygonaceae – Buckwheat family
Genus Polygonum L. – knotweed
Species Polygonum lapathifolium L. – curlytop knotweed

Subordinate Taxa

This plant has no children

Legal Status

U.S. Weed Information
Polygonum lapathifolium
curltop ladysthumb
curlytop knotweed
pale smartweed
This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.
NE&GP Stubbendieck, J., G.Y. Friisoe, & M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains. Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska.
SWSS Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM. Southern Weed Science Society. Champaign, Illinois.
WSWS Whitson, T.D. (ed.) et al.. 1996. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming.

Wetland Status

Interpreting Wetland Status

Synonyms

PELA22  Persicaria lapathifolia (L.) Gray

Top Level Regions
Alaska FAC
Arid West FACW
Atlantic and Gulf Coastal Plain FACW
Eastern Mountains and Piedmont FACW
Great Plains OBL
Midwest FACW
Northcentral & Northeast FACW
Western Mountains, Valleys, and Coast FACW

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover