Strychnos nux-vomica is a tree native to Southeast Asia and Australia, known for its toxic seeds. The seeds contain strychnine, a potent alkaloid that can cause severe poisoning in humans and animals. The tree typically grows in dry, deciduous forests and can reach heights of up to 15 meters. The seeds of Strychnos nux-vomica have been used in traditional medicine, but their toxicity poses significant risks. Due to its dangerous properties, the plant is often studied in toxicology and pharmacology. Proper handling and knowledge are essential when dealing with this species.