water hemlock


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Related to water hemlock: water parsnip

water hemlock:

see poison hemlockpoison hemlock,
lethally poisonous herbaceous plant (Conium maculatum) of the family Umbelliferae (parsley family). It has rank, finely divided foliage, flat-topped clusters of small white flowers, and a hollow, purple-mottled stem.
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Water Hemlock

 

(Cicuta), a genus of plants of the family Umbelliferae. Perennial water or marsh grasses with double or quadruple pinnate leaves. Small white blossoms, gathered into compound umbels. Fruit mostly rounded with mericarps slightly compressed on the sides. About ten (by other data, up to 20) species, mainly in North America.

In the USSR, the Eurasian species, C. virosa, is widespread: stalk hollow, height 50-150 cm; leaves double or triple pinnate; vertical rhizome divided into chambers by septa. The plant grows in marshes, on wet meadows, in alder thickets, and along swamped banks of rivers, lakes, and ditches. This is one of the most poisonous plants of the flora of the USSR. Especially dangerous are the rhizome and roots, which contain the poisonous substance cicutoxin. Domestic animals (chiefly cattle and sheep) are poisoned most frequently in autumn or spring. In intoxication, there is salivation, restlessness, distention of the rumen, frequent discharge of feces and urine, and convulsive contraction of the jaws. Characteristic are repeated tonic spasms (with prolonged contraction of muscles) and collapse of the animal, rapid pulse, and slow respiration. Death results from suffocation. Treatment consists of the immediate use of tannin, carbon, and laxative and cardiac (caffein) drugs; in the event of convulsions, chloral hydrate is used.

REFERENCE

Atlas lekarstvennykh rastenii SSSR. Moscow, 1962.
References in periodicals archive ?
(14,15) Table 1 compares the two toxidromes that also cause rhabdomyolysis, water hemlock (cicutoxin) and palytoxin poisoning, with the Haff disease toxidrome.
Water Hemlock (Cicuta maculata & Cicuta spp.) All parts of plants poisonous.
The root ingested by the two brothers was identified as water hemlock (Cicuta maculata).
Unintentional ingestions of the water hemlock plant, Cicuta maculata, causes most of the fatalities attributed to the misidentification of poisonous plants in the United States because the plant resembles many edible herbs and roots, is lethal in small quantities, and grows in low-lying areas throughout the US.
Their list also includes water hemlock, oleander, bittersweet nightshade, common pokeweed or pokeberry, pennyroyal, meadow death camas, foxglove, groundcherry, and jimsonweed.
Moreover, some botanicals--such as black cohosh, water hemlock, ephedra, kava kava, yohimbine, guarana, and ginkgo seeds--are known to induce seizures, which could negate an AED's efficacy.
It looks like an accident - local herbalist Juliet Spence fed him sage water hemlock, mistaking it for wild parsnip.
An example of this is water hemlock. This plant emerges in wet areas which are the first to become green in early spring.