Cicuta Douglasii
This page is a stub. You can help us improve the Materia Medica Wiki by expanding it.

Cicuta Douglasii
Image Unavailable
Drawing by the USDA is
in the Public Domain[1]

Other Names

Douglas' Water-Hemlock
Western Water-Hemlock
Has seven synonyms according to the Catalogue of Life[2]



Channels Entered








Other uses

The Okanagan peoples used the powdered roots for poisoning arrows.[4]


The Dakelh (Carrier) peoples applied the fresh root as a poultice for rheumatism.[4]

Toxicity, or Adverse Reactions

Western Water-Hemlock (Cicuta Douglasii) is extremely toxic and considered the most toxic plant existing in North America.[3] It contains cicutoxin which has a strong carrot-like odour, and even in a small amount of cicutoxin acts upon the central nervous system causing, violent convulsions, paralysis, respiratory failure, grand mal seizures, and death.[4][3]

Notes on Identification


Conservation/IUCN/CITES Status


1. USDA-NRCS PLANTS Database / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service.
2. Hassler M. (2017). World Plants: Synonymic Checklists of the Vascular Plants of the World (version Nov 2016). In: Species 2000 & ITIS Catalogue of Life, 23rd December 2016 (Roskov Y., Abucay L., Orrell T., Nicolson D., Bailly N., Kirk P., Bourgoin T., DeWalt R.E., Decock W., De Wever A., Nieukerken E. van, eds). Digital resource at Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.
3. United States Department of Agriculture Agricultural Research Service Water hemlock (Cicuta douglasii) accessed January 17, 2017
4. Parish, Coupé, Lloyd Plants of Southern Interior British Columbia and the Inland Northwest B.C. Ministry of Forests and Lone Pine Publishing 1996 pp 245


Add a New Comment
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License