Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
large knotweed
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Click on the image below to enlarge it and download a high-resolution
JPEG file.
Sheri Hagwood. Bureau of Land Management. United States, ID, Bureau of Land Management Jarbidge Resource Area. June 27, 2003. Usage Requirements.
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Images:
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
See all the Polygonum thumbnails at the PLANTS Gallery
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Synonyms:
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
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POCOM3 |
Polygonum coarctatum Douglas ex Hook. f. var. majus Meisn. |
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POMA9 |
Polygonum majus (Meisn.) Piper |
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Distribution:
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
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See U.S. county distributions (when available) by clicking on the map or the linked states below:
USA (CA, ID, MT, NV, OR, WA, WY), CAN (BC) |
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Related Taxa:
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
View
33 genera in Polygonaceae,
80 species in Polygonum,
7 subspecies
in Polygonum douglasii Greene
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Classification:
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
Click on a scientific name below to expand it in the PLANTS
Classification Report.
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Threatened and Endangered Information:
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
The related entities 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.
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Wetland Indicator Status:
NOTE: On June 1, 2012, the 2012 National Wetland Plant List superseded the information below (see Federal Register, May 9, 2012, 77(90): 27210-27214[https://federalregister.gov/a/2012-11176]). For updated wetland information about this species, see the latest wetland list.
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
Polygonum douglasii:
| 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 |
| UPL,FAC |
UPL |
NO |
FACU |
FAC |
FACU- |
NO |
UPL |
UPL |
FACU |
FACU |
NO |
NO |
NO |
Interpreting Wetland Indicator Status
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More Accounts and Images:
Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
View species account and distribution map from Flora of North America (FNA).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 524557.
View species account and distribution map from Jepson Interchange (University of California - Berkeley).
View photographs and distribution from University of Washington Burke Museum.
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