European water-hemlock (Mackenzie's water hemlock)
Apiaceae
Introduction to Vascular Plants
Species Information
General:
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.
Leaves:
Stem leaves compound, divided 1-3 times, axils without bulblets; leaflets linear to narrowly lanceolate, midvein on upper leaflet surface scabrous.
Flowers:
Inflorescence terminal in a compound umbel; flowers white to greenish or pinkish.
Fruits:
Rounded, broader than long, 1.5-2 mm long.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Habitat and 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.Status Information
Synonyms
Synonyms and Alternate Names:
Cicuta mackenzieana Raup
Taxonomic Keys
KEY TO CICUTA
1. Axils of leaves with bulblets; leaflets with narrowly linear segments C. bulbifera 1. Axils of leaves without bulblets; leaflets lanceolate. 2. Fruits slightly broader than long; midvein on upper leaflet surface scabrous C. virosa 2. Fruits from as broad as long to longer than broad; midvein on upper leaflet surface glabrous. 3. Leaflets 3-4 times as long as broad, lanceolate to narrowly oblong or elliptic; fruit with a narrow raised border along edge of dark interval C. douglasii Leaflets more than 5 times as long as broad, linear to narrowly lanceolate; fruit without a raised border along edge of dark interval C. maculata |