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Conium maculatum

© 2008 Keir Morse (CalPhotos)

 
Conium maculatum

© 2011 Louis-M. Landry (CalPhotos)

Conium maculatum  L.
poison hemlock
Conium maculatum, a dicot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

The California Invasive Plant Council (Cal-IPC) lists plants that cause serious problems in native ecosystems. Cal-IPC classifies the statewide impact of Conium maculatum as moderate (plant profile).

Communities: weed, species characteristic of disturbed places, wetland-riparian
Habitat: disturbed, disturbed [Walker]
Wetlands:Equally likely to occur in wetlands or non wetlands [U.S. Fish & Wildlife Service.]
Toxicity: MAJOR   [California Poison Control System 2010]    
Elevation: between 0 and 5000 feet
Family: Apiaceae     (TJM2 Treatment)
Name Status:
Recognized as current in TJM2 + PLANTS + JM93
  
Distribution in California by County: See a detailed   Distribution Grid  of this plant in California.
A shaded county indicates that there are one or more ocurrence records of this plant within the county.

Hover the mouse over the map to see county names. Click to view records from that county.
 

  There are specimen records from this county in an herbarium.
  There are documented records, vouchered or confirmed by an expert.
  There are reported records.
  There are reported records available indirectly (eg. in botanical literature).
Records by County, with approximate record counts in the form: TOTAL / CCH.   Click county name to view records.
 Information about  Conium maculatum  from other sources:
Photos on CalPhotos / Picasa / Flickr

Photos or website references on Google

USDA PLANTS Profile (COMA2)

2011 Jepson Manual Treament from the Jepson Herbarium,
University of California, Berkeley

Original Publication citation. on the International Plants Names Index

Search efloras.org (Flora of North America)

    Citation
    Calflora: Information on California plants for education, research and conservation, based on data contributed by dozens of public and private institutions and individuals, including the Consortium of Calif. Herbaria. [web application]. 2012. Berkeley, California: The Calflora Database [a non-profit organization]. Available: http://www.calflora.org/   (Accessed: May 29, 2012).

    Note that the information on this page comes from diverse sources, and that none of the links are sponsored.

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