#poisonous plant
- Hedge hyssop — A medicinal, toxic herbaceous plant of the Scrophulariaceae family (Gratiola officinalis), growing spontaneously in damp places, marshes, meadows, and floodplains. Characterized by erect stems, lanceolate leaves, and pale yellowish-white flowers, the plant contains powerful glycosides (gratiolin) and was historically used in empirical popular medicine as a drastic purgative, emetic, or diuretic, its handling requiring extreme precautions due to the major risk of cellular poisoning; hedge hyssop.