Poison Hemlock , Conium maculatum, is an extremely deadly plant to know and avoid. Socrates and many other condemned prisoners of ancient Greece can attest to this.

(Correction) Conium maculatum causes salivation not thirst or dryness of the throat. Here are the symptoms according to US National Library of Medicine and National Institutes of Health. The general symptoms of hemlock poisoning are effects on nervous system (stimulation followed by paralysis of motor nerve endings and CNS stimulation and later depression), vomiting, trembling, problems in movement, slow and weak later rapid pulse, rapid respiration, salivation, urination, nausea, convulsions, coma and death.

Poison Hemlock Sources:

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