These plants WILL kill you (after consumption)
Ricinus Communis
The seeds in the Castor bean carry a deadly toxin named ricin. It is known as one of the deadliest natural poisons as it is 6,00 times more poisonous than cyanide and 12,000 times more than rattle snake venom. Ingestion of just four seeds can kill an average-sized adult, anything less causes severe vomiting and abdominal pain even convulsions.
Abrus Precatorius
This plant was once used for health purposes, as it's leaves and roots were used to treat lung/breathing issues and diseases. However, the seeds, which look like a crab's eye, carry a lectin poison called abrin, it is so toxic that if swallowed or chewed, it will result in almost immediate death. It is one of the most lethal poisons and similar to ricin, causing horrible symptoms including: liver, and bladder failure, eye bleeding, and convulsive seizures. The structure of this plant is somewhat complex, fully grown the filaments fuse, creating a filament sheath where a single carpel lies. The petals grow upward from the base of the plant. Anthers of the plant contain the formation of pollen grains, and on the anther, stomata lies, which typically does not happen. The stigma is surrounded by haris which carry pollen grains. The sepal formation is unidirectional.
Nerium Oleander
All parts of this North African native are poisonous - leaves, flowers, roots, stems, twigs- all toxic. Ingesting even a small amount can cause severe issues including death. Your heart, nervous system, stomach and intestines, eyes and skin may all be attacked. The poison is made by two potent cardiac glycosides: oleandrin and neriine.
Hippomane mancinella
This is America's deadliest tree the Manchineel, found in Florida. Known in spanish as arbol de la muerte or "tree of death" you do not, in any way, want to interact with it. Although there are no deaths recorded in modernization, it is reported that old shipwrecked sailors who have come into contact with this tree and eaten from it have suffered severe issues. There is one recording of a person who has eaten from the apple like fruit of the tree. She described it as initially sweet, but soon realized it would cause her excruciating pain in the throat. The sap, is very toxic itself, causing harsh blisters when coming to contact with skin, and if gotten in eyes could cause temporary blindness.
Aconitum
"Beautiful but deadly" this plant has been used in the past as lacing over weapons to kill. If ingested you will know its symptoms after 20 minutes, as your fingers and toes will start to burn, and in just 6 hours, you'll be dead.
Ageratina altissima
The leaves and stems of the White Snakeroot plant tremetol, a fat-soluble toxin. This plant indirectly affects humans, livestock are the ones to consume it. The toxicity is passed on to the milk they produce, this is the point where humans consume, if large quantities are consumed it can cause tremetol poisoning, also known as milk sickness, and can be fatal.
Cerbera odollam
Sea mango is a Japanese native tree, it is all highly toxic, much like it's relative, Oleander. The worst part is the fruit it produces, and its seeds. Consumption can cause vomiting, stomach ache, and limb numbness, and you could also die.
_Conium maculatum-
Acutely toxic to humans and animals. All parts are poisonous and after consumption you will face severe symptoms after just 20 minutes. Symptoms include: dilation of the pupils, dizziness, and trembling followed by slowing of the heartbeat, paralysis of the central nervous system, muscle paralysis, and death due to respiratory failure.
Brugmansia
Yet another plant which all parts of is poisonous consisting of the alkaloids atropine, scopolamine, and hyoscyamine, after ingestion of these plants you may experience hallucinations, paralysis, abnormal heart rate, and memory loss. This is indeed fatal.
Atropa belladonna
This plant has earned this scary nickname and many others because of how extremely toxic its berries and foliage are, containing deadly dosages of tropane alkaloids. It is the best choice plant for an assassin's deadly poison. Its roots are the most dangerous, however since the poison is carried throughout the entire plant, the real killers are the berries. Due to their attractiveness, kids will be careless and even 1 or 2 berries, will kill a child. 10 to 20 might be enough for an adult and even just a single leaf will prove to be fatal.
