Solanum dulcamara - Bittersweet also known as Woody Nightshade. This relative of the deadly nightshade is also a poisonous plant, but far less so than its notorious cousin. The twigs, roots & bark are used in herbal medicine.
Dubbed "the most violently toxic plant that grows in North America" by the USDA, water hemlock (cicuta maculata) can strike you dead within 15 minutes of ingestion. The poison cicutoxin attacks the central nervous system, causing severe seizures and convulsions that turn deadly as a result of asphyxia and cardiovascular collapse. | Photo: JW Stockert | thisoldhouse.com