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  2. Poison hemlock, wild parsnips are invasive to Ohio. How to ...

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    How do poison hemlock and wild parsnip harm humans? Poison hemlock is toxic when ingested through the mouth, nose, or eyes. Ingestion can cause nervous trembling, salivation, pupil dilation, rapid ...

  3. Conium maculatum - Wikipedia

    en.wikipedia.org/wiki/Conium_maculatum

    Conium maculatum, known as hemlock (British English) or poison hemlock (American English), is a highly poisonous flowering plant in the carrot family Apiaceae, native to Europe and North Africa. It is herbaceous without woody parts and has a biennial lifecycle. A hardy plant capable of living in a variety of environments, hemlock is widely ...

  4. Poison hemlock is growing in Missouri this summer. How to ...

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    Poison hemlock grows from a center stalk and has light green stems and fern-like leaves that can grow up to 6 feet tall in Missouri’s climate. ... Symptoms of poison hemlock may include vomiting ...

  5. Potentially deadly poison hemlock is back. Now is the time to ...

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    Indeed, the genus name Conium is Greek, meaning to spin or whirl, and refers to the symptoms of poison hemlock poisoning." The Cleveland Clinic says that poisoning can occur after ingesting even ...

  6. Conium - Wikipedia

    en.wikipedia.org/wiki/Conium

    Conium maculatum (poison hemlock) is infamous in its use as a poison. [35] [36] A small overdose of extract of the plant causes paralysis with higher toxic doses causing a ceasing of respiratory function followed by death. [31] Poison hemlock was historically used in official executions and assassinations. [37]

  7. Cicuta - Wikipedia

    en.wikipedia.org/wiki/Cicuta

    Cicuta spp. are biennial plants that are all similar in morphology, growing up to a maximum of 2.5 meters (8 ft) in height.The stem of the plant is branching, erect, smooth and hollow (except for partitions at the junction of the leaves and stem), sometimes being purple-striped, or mottled (typically only C. maculata has the purple stripes or spots).

  8. What is poison hemlock? What to know about this pretty but ...

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    Here's what you need to know about some of the more common plants to stay away from, like poison hemlock, poison ivy and poison oak.

  9. Coturnism - Wikipedia

    en.wikipedia.org/wiki/Coturnism

    Coniine from hemlock consumed by quail has been suggested as the cause of coturnism, [4] though quail resist eating hemlock. [3] Hellebore has also been suggested as the source of the toxin. [5] It has also been asserted that this evidence points to the seeds of the annual woundwort (Stachys annua) being the causal agent. [3]