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Flaigg, Norman G.
Cicuta maculata L.
Spotted water hemlock, Water-Hemlock, Beaver Poison
USDA Symbol: CIMA2
Smooth, erect, highly branched plant bearing dome- shaped, loose clusters of small white flowers. The sturdy stem is magenta-streaked.
The plant is not related to true Hemlock (Tsuga spp.), but to Poison Hemlock (Conium maculatum), the plant used to poison Socrates.
Plant CharacteristicsDuration: Biennial Habit: Herb Flower:
Bloom InformationBloom Color: White
Bloom Time: Jun , Jul , Aug , Sep
, WY Canada: NB
, PE Native Distribution:
Southern Ontario to Nova Scotia; south through New England to Florida; west to Texas; north through Missouri to Canada. Native Habitat:
Wet meadows, thickets, freshwater swamps.
Growing ConditionsSoil Moisture: Wet
BenefitWarning: POISONOUS PARTS: All parts; roots may be mistaken for wild parsnip or artichoke. Highly Toxic! May be Fatal if Eaten! Symptoms include muscle spasms, dilated pupils, dizziness, diarrhea, stomach pain, convulsions. Toxic Principle: Cicutoxin and cicutol. (Poisonous Plants of N.C.)
Conspicuous Flowers: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2010-08-30
Research By: TWC Staff