Polygonum amphibium L. var. emersum Michx.
longroot smartweed
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Images:
Polygonum amphibium L. var. emersum Michx.
Click on a thumbnail to view an image, or
see all the Polygonum thumbnails at the PLANTS Gallery
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Synonyms:
Polygonum amphibium L. var. emersum Michx.
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PEAM8 |
Persicaria amphibia (L.) Gray p.p. |
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PEAME |
Persicaria amphibia (L.) Gray var. emersa (Michx.) J.C. Hickman |
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PECO23 |
Persicaria coccinea (Muhl. ex Willd.) Greene |
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PEMU11 |
Persicaria muehlenbergii (S. Watson) Small |
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POAMC |
Polygonum amphibium L. var. coccineum (Muhl. ex Willd.) Farw. |
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POCO8 |
Polygonum coccineum Muhl. ex Willd. |
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POCOP4 |
Polygonum coccineum Muhl. ex Willd. var. pratincola (Greene) Stanford |
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POCOT |
Polygonum coccineum Muhl. ex Willd. var. terrestre Willd. |
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POMU10 |
Polygonum muehlenbergii S. Watson |
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POMUT |
Polygonum muehlenbergii S. Watson var. terrestre (Willd.) Trel. |
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Distribution:
Polygonum amphibium L. var. emersum Michx.
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See U.S. county distributions (when available) by clicking on the map or the linked states below:
USA (AR, AZ, CA, CO, CT, DC, DE, 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, MB, NB, NS, NT, ON, PE, QC, SK) |
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Related Taxa:
Polygonum amphibium L. var. emersum Michx.
View
33 genera in Polygonaceae,
80 species in Polygonum,
2 varieties
in Polygonum amphibium L.
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Classification:
Polygonum amphibium L. var. emersum Michx.
Click on a scientific name below to expand it in the PLANTS
Classification Report.
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Noxious Weed Information:
Polygonum amphibium L. var. emersum Michx.
This plant is 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 noxious weed list for that location,
or click here for a composite list of all
Federal and State Noxious Weeds.
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U.S. Weed Information:
Polygonum amphibium L. var. emersum Michx.
Polygonum amphibium
water knotweed
The related entity italicized and indented above 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.
SWSS |
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Southern Weed Science Society.
1998.
Weeds of the United States and Canada. CD-ROM.
Southern Weed Science Society.
Champaign, Illinois.
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Wetland Indicator Status:
Polygonum amphibium L. var. emersum Michx.
Polygonum amphibium:
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 |
OBL |
OBL |
OBL |
OBL |
OBL |
OBL |
OBL |
OBL |
OBL |
OBL |
OBL |
OBL |
NO |
NO |
Interpreting Wetland Indicator Status
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More Accounts and Images:
Polygonum amphibium L. var. emersum Michx.
View photographs from CalPhotos.
View species account and distribution map from Flora of North America (FNA).
View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 529773.
View species account and distribution map from Jepson Interchange (University of California - Berkeley).
View species account and photographs from Lady Bird Johnson Wildflower Center Native Plant Information Network (NPIN).
View photographs and distribution from University of Washington Burke Museum.
View species account and photographs from University of Wisconsin - Stevens Point Freckmann Herbarium.
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