Evergreen which grows from two to six feet high, with large clusters of red, pinkish or white flowers. This plant is extremely poisonous. Even the smoke from burning it is toxic. A single leaf can kill a human. It grows native in the Mediterranean region to Japan. It is often grown as a houseplant or patio tree in more temperate areas of North America.
Lathyrus odoratus and other related species
Climbing vine with clustered, fragrant flowers in a variety of colors. Grows to 1-2 meters (about six feet six inches). If eaten in large quantities, it can be deadly. It grows in many gardens across North America.
Brown, spicy seed or brown powder. Harmless in small amounts, but more than 10 grams or 0.4 oz can cause acute poisoning or death.
Biennial with tall flowering stalks. Has such nicknames as witch's gloves and dead man's bells. A nibble of a leaf on an upper stalk is enough to possibly cause death. However, it is also used to treat the heart.
Deciduous shrub with purple or white flowers appearing in the spring. Scarlet or occasionally yellow berry-like fruits. The berries may be fatally poisonous, even if only a few are consumed.