E-Flora BC: Electronic Atlas of the Flora of British Columbia

Cicuta virosa L.
European water-hemlock (Mackenzie's water hemlock)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #26087)

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Distribution of Cicuta virosa
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Species Information

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Stout perennial herb from a taproot or cluster of tuberous roots; stems single from a sometimes thickened and chambered base, erect, 0.3-1 m tall.
Stem leaves compound, divided 1-3 times, axils without bulblets; leaflets linear to narrowly lanceolate, midvein on upper leaflet surface scabrous.
Inflorescence terminal in a compound umbel; flowers white to greenish or pinkish.
Rounded, broader than long, 1.5-2 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet stream banks, marshes, lake and pond shores in the montane zone; rare in NE BC; N to AK, YT and NT and E to PQ.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Cicuta mackenzieana Raup

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References