Toxicodendron rydbergii (Small ex Rydb.) Greene
western poison ivy
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Click on the image below to enlarge it and download a high-resolution
JPEG file.
©Al Schneider. Southwest Colorado Wildflowers. United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements.
Any use of copyrighted images requires notification of the copyright holder.
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Images:
Toxicodendron rydbergii (Small ex Rydb.) Greene
Click on a thumbnail to view an image, or
see all the Toxicodendron thumbnails at the PLANTS Gallery
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Synonyms:
Toxicodendron rydbergii (Small ex Rydb.) Greene
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RHRAR |
Rhus radicans L. var. rydbergii (Small ex Rydb.) Rehder |
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RHRAV |
Rhus radicans L. var. vulgaris (Michx.) DC. |
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RHTOV2 |
Rhus toxicodendron L. var. vulgaris Michx. |
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TODE2 |
Toxicodendron desertorum Lunell |
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TORAR2 |
Toxicodendron radicans (L.) Kuntze var. rydbergii (Small ex Rydb.) Erskine |
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Distribution:
Toxicodendron rydbergii (Small ex Rydb.) Greene
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See U.S. county distributions (when available) by clicking on the map or the linked states below:
USA (AZ, CO, CT, IA, ID, IL, IN, KS, MA, MD, ME, MI, MN, MT, NC, ND, NE, NH, NM, NV, NY, OH, OK, OR, PA, RI, SD, TX, UT, VA, VT, WA, WI, WV, WY), CAN (AB, BC, MB, NB, NS, ON, PE, QC, SK, YT) |
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Related Taxa:
Toxicodendron rydbergii (Small ex Rydb.) Greene
View
22 genera in Anacardiaceae,
7 species in Toxicodendron
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Classification:
Toxicodendron rydbergii (Small ex Rydb.) Greene
Click on a scientific name below to expand it in the PLANTS
Classification Report.
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Threatened and Endangered Information:
Toxicodendron rydbergii (Small ex Rydb.) Greene
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 protected plant
list for that location.
Ohio: |
northern poison-ivy |
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Endangered |
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U.S. Weed Information:
Toxicodendron rydbergii (Small ex Rydb.) Greene
Western poison ivy
poison ivy
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 |
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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:
Toxicodendron rydbergii (Small ex Rydb.) Greene
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- |
NI |
FAC |
FACU |
FAC |
FAC |
FACW |
FACU |
FACW- |
NO |
NO |
NO |
NO |
Interpreting Wetland Indicator Status
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More Accounts and Images:
Toxicodendron rydbergii (Small ex Rydb.) Greene
View species account from USDA Forest Service Fire Effects Information System (FEIS).
View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 28822.
View species account and photographs from Lady Bird Johnson Wildflower Center Native Plant Information Network (NPIN).
View species account from Native American Ethnobotany (University of Michigan - Dearborn).
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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Related Web Sites:
Toxicodendron rydbergii (Small ex Rydb.) Greene
NY-Cornell University: Poisonous Plant Databases (images)
OK-Oklahoma Biological Survey
Poison Ivy, Oak, & Sumac Information Center
University of Texas - The Toxicodendrons: popular article on the genus
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