Conium maculatum L.
poison hemlock
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Click on the image below to enlarge it and download a high-resolution
JPEG file.
William & Wilma Follette. USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. Courtesy of USDA NRCS Wetland Science Institute. Usage Requirements.
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Images:
Conium maculatum L.
Click on a thumbnail to view an image, or
see all the Conium thumbnails at the PLANTS Gallery
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Distribution:
Conium maculatum L.
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See U.S. county distributions (when available) by clicking on the map or the linked states below:
USA (AL, AR, AZ, CA, CO, CT, DC, DE, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, 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, NB, NS, ON, QC, SK) |
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Related Taxa:
Conium maculatum L.
View
91 genera in Apiaceae,
1 species in Conium
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Classification:
Conium maculatum L.
Click on a scientific name below to expand it in the PLANTS
Classification Report.
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Noxious Weed Information:
Conium maculatum L.
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.
Colorado: |
poison hemlock |
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C list (noxious weeds) |
Idaho: |
poison hemlock |
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Noxious weed |
Iowa: |
poison hemlock |
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Secondary noxious weed |
Nevada: |
poison hemlock |
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Noxious weed |
New Mexico: |
poison hemlock |
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Class B noxious weed |
Ohio: |
poison hemlock |
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Prohibited noxious weed |
Oregon: |
poison hemlock |
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"B" designated weed |
poison hemlock |
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Quarantine |
Washington: |
poison hemlock |
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Class C noxious weed |
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U.S. Weed Information:
Conium maculatum L.
cigue maculee
cigue tachetee
deadly hemlock
poison hemlock
poison parsley
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.
STATE |
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Assorted authors.
200_.
State noxious weed lists for 46 states.
State agriculture or natural resource departments.
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Cal-IPC |
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California Invasive Plant Council.
2006.
California Invasive Plant Inventory. Cal-IPC Publication 2006-02 (February 2007).
California Invasive Plant Council.
Berkeley, California.
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KY |
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Haragan, P.D.
1991.
Weeds of Kentucky and adjacent states: a field guide.
The University Press of Kentucky.
Lexington, Kentucky.
278pp.
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N'EAST |
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Uva, R.H., J.C. Neal, & J.M. DiTomaso.
1997.
Weeds of the Northeast.
Cornell University Press.
Ithaca, New York.
397pp.
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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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SEEPPC |
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Southeast Exotic Pest Plant Council.
1996.
Invasive exotic pest plants in Tennessee (19 October 1999).
Research Committee of the Tennessee Exotic Pest Plant Council.
Tennessee.
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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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WSWS |
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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.
630pp.
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Introduced Information:
Conium maculatum L.
This plant is introduced to some part of the PLANTS
Floristic Area, though it may be native in other parts. Click on
link below for a partial or complete list of PFA introduced plants.
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Wetland Indicator Status:
Conium maculatum L.
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 |
FAC,OBL |
FACW |
FACW |
FACW |
FAC |
FACW |
FACW |
OBL |
FACW |
FAC+ |
FACW |
NO |
NO |
NO |
Interpreting Wetland Indicator Status
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More Accounts and Images:
Conium maculatum L.
View photographs from CalPhotos.
View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 29473.
View species account and distribution map from Jepson Interchange (University of California - Berkeley).
View species account from Native American Ethnobotany (University of Michigan - Dearborn).
View photographs and distribution from University of Tennessee Herbarium.
View species account, 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:
Conium maculatum L.
Canada-Ontario Noxious Weeds
Idaho One Plan: noxious abstract & images
MT-Center for Invasive Plant Management
NV-Extension Weed Wanted Posters
New Zealand Environment Bay of Plenty: abstract & images
Texas A&M: Vascular Plant Image Gallery
The Nature Conservancy: Wildland Weeds Management & Research Program
Victoria - Natural Resources & Environment: Landcare Notes
Virginia: abstract & image
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