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Polygonum ramosissimum Michx.
bushy knotweed
Symbol: PORA3
Group: Dicot
Family: Polygonaceae
Growth Habit: Forb/herb
Duration: Annual
U.S. Nativity: Native
Click on the image below to enlarge it and download a high-resolution TIFF file.
Click on this Line drawing of Polygonum ramosissimum to enlarge it and download a high-resolution TIFF file Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 1: 663. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc. Usage Guidelines.

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Classification Distribution Images Invasive Links More Info Noxious Related Taxa Synonyms Wetland
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More Information
About bushy knotweed

Link to plant Classification report for Polygonum ramosissimum

Plant source and reference for Polygonum ramosissimum

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State Distributional Map for PORA3
© Image generated using gd 1.8
Plant Distribution by State

Polygonum ramosissimum Michx.

PORA3

See county distributions for the following states by clicking on them below or on the map.

AR CA CT
IL IA KS
KY ME MA
MI MO NH
ND RI SD
UT* VA WI*
* Offsite source.
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Virginia
Washington
West Virginia
Wisconsin
Wyoming

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Kansas distribution information Michigan distribution information New Hampshire distribution information Utah distribution information linked offsite at Utah State University Wisconsin distribution information linked offsite at University of Wisconsin Madison Arkansas distribution information Connecticut distribution information Iowa distribution information Maine distribution information Massachusetts distribution information South Dakota distribution information Illinois distribution information North Dakota distribution information Virginia distribution information California distribution information Kentucky distribution information Missouri distribution information Rhode Island distribution information
Related Taxa:
Polygonum ramosissimum Michx.

View 30 genera in Polygonaceae, 78 species in Polygonum or click below on a thumbnail map or name for variety profiles.

Distribution of Polygonum ramosissimum var. prolificum. Native. Image Available. Distribution of Polygonum ramosissimum var. ramosissimum. Native. Image Available.      
Polygonum ramosissimum var. prolificum
bushy knotweed		 Polygonum ramosissimum var. ramosissimum
bushy knotweed		      
Nativity color legend

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Classification:
Polygonum ramosissimum Michx.

Click on a scientific name below to expand it in the PLANTS Classification Report.
   
    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 ramosissimum Michx. – bushy knotweed

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Threatened and Endangered Plant Information:
Polygonum ramosissimum Michx.
This plant and the related entities and synonyms italicized and indented below are listed by the U. S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
Maryland:
       bushy knotweed     Endangered, Extirpated
New Hampshire:
   Polygonum exsertum auct. p.p. non Small [=PORAR]
       exserted knotweed     Threatened
   Polygonum prolificum (Small) B.L. Robins. [=PORAP]
       prolific knotweed     Threatened
Pennsylvania:
       bushy knotweed     Extirpated

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Invasive Information:
Polygonum ramosissimum Michx.
        bushy knotweed
        tall knotweed
This plant is considered invasive by 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 invasive plant list, or click here for a composite list of Invasive Plants 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. 589pp.
 

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Wetland Indicator Status:
Polygonum ramosissimum Michx.
Nat. Ind. Reg. 1 Reg. 2 Reg. 3 Reg. 4 Reg. 5 Reg. 6 Reg. 7 Reg. 8 Reg. 9 Reg. 0 Reg. A Reg. C Reg. H
FACU-,FACW FAC FACU- FAC- FACU FAC FACW FAC FACU FAC- FACU* FACU NO NO

Wetland Data InformationInterpreting wetland indicator status

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Other Species Accounts and Images:
Polygonum ramosissimum Michx.

View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 20921.
View species account or photographs from Wisconsin State Herbarium (UW-Madison).

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