Most Deadly Plants in the World
Major population of the world is Vegetarian, many of them don’t know the facts that even some species of plants are carnivorous, and some are deadly toxic. Here are some of the top most deadly plants in the world.
Giant Pitcher Plant, Nepenthes attenboroughii
The pitcher plant is among the largest of all pitchers and is so big that it can catch rats as well as insects in its leafy trap. It is named after the celebrated broadcaster and naturalist Sir David Attenborough, who is a keen enthusiast of the genus. The species is characterised by its large and distinctive bell-shaped lower and upper pitchers and narrow, upright lid.
Castor Bean Plant, Ricinus communis
The toxicity of raw castor beans is due to the presence of ricin. Although the lethal dose in adults is considered to be four to eight seeds, reports of actual poisoning are relatively rare. According to the 2007 edition of Guinness World Records, this plant is the most poisonous in the world. Despite this, suicides involving ingestion of castor beans are unheard of in countries like India where castor grows abundantly on the roadsides, which may be attributed to the rather painful and unpleasant symptoms of overdosing on ricin, which can include nausea, diarrhea, tachycardia, hypotension and seizures persisting for up to a week. However, the poison can be extracted from castor by concentrating it with a fairly complicated process similar to that used for extracting cyanide from almonds.
Western Water Hemlock, Cicuta douglasii
The main distinguishable characteristic of western water hemlock is its toxicity. Cicutoxin is the toxin that is produced by the water hemlock, making it the most poisonous plant in North America. Cicutoxin is a yellowish liquid that is prevalent in the roots. It is an unsaturated alcohol that has a major impact on the central nervous system of animals. Early symptoms of cicutoxin poisoning include excessive salivation, frothing at the mouth, nervousness, and incoordination. These symptoms can turn into tremors, muscular weakness, seizures and respiratory failure.
White snakeroot, Eupatorium rugosum
White Snakeroot contains the toxin tremetol; when the plants are consumed by cattle, the meat and milk become contaminated with the toxin. When milk or meat containing the toxin is consumed, the poison is passed onto humans. If consumed in large enough quantities, it can cause tremetol poisoning in humans. The poisoning is also called milk sickness, as humans often ingested the toxin by drinking the milk of cows that had eaten snakeroot.
Monkshood, Aconitum napellus
Marked symptoms may appear almost immediately, usually not later than one hour, and “with large doses death is almost instantaneous.” Death usually occurs within two to six hours in fatal poisoning (20 to 40 mL of tincture may prove fatal). The initial signs are gastrointestinal including nausea, vomiting, and diarrhea. This is followed by a sensation of burning, tingling, and numbness in the mouth and face, and of burning in the abdomen. In severe poisonings pronounced motor weakness occurs and cutaneous sensations of tingling and numbness spread to the limbs.Cardiovascular features include hypotension, sinus bradycardia, and ventricular arrhythmias. Other features may include sweating, dizziness, difficulty in breathing, headache, and confusion. The main causes of death are ventricular arrhythmias and asystole, paralysis of the heart or of the respiratory center. The only post-mortem signs are those of asphyxia.
Common Bladderwort, Utricularia macrorhiza
Bladderworts are carnivorous plants of bogs and shallow water. Tiny swimming animals touch trigger hairs around the mouth of a bladder. A trap door opens and the bladder expands, sucking the prey inside. Common bladderwort can be distinguished from other bladderworts by the short, curved spur on the flower.
Venus flytrap, Dionaea muscipula
It catches its prey, chiefly insects and arachnids, with a trapping structure formed by the terminal portion of each of the plant’s leaves and is triggered by tiny hairs on their inner surfaces. When an insect or spider crawling along the leaves contacts a hair, the trap closes if a different hair is contacted within twenty seconds of the first strike. The requirement of redundant triggering in this mechanism serves as a safeguard against a waste of energy in trapping objects with no nutritional value.
Angel Trumpet, Brugmansia
All parts of Brugmansia are poisonous, with the seeds and leaves being especially dangerous. Brugmansia are rich in Scopolamine (hyoscine),hyoscyamine, and several other tropane alkaloids. Effects of ingestion can include paralysis of smooth muscles, confusion, tachycardia, dry mouth, diarrhea, migraine headaches, visual and auditory hallucinations, mydriasis, rapid onset cycloplegia, and death.
Oleander, Nerium oleander
Nerium oleander has historically been considered a poisonous plant because some of its compounds may exhibit toxicity, especially to animals, when consumed in high amounts. Among these compounds are oleandrin and oleandrigenin, known as cardiac glycosides, which are known to have a narrowtherapeutic index and can be toxic when ingested.
Mala Mujer, Cnidoscolus angustidens
The entire plant is covered in sharp stinging hairs that can causing severe contact dermatitis. Each stinging hair has a white base, which is why the leaves have a dotted appearance.
Many of the facts are taken from Wikipedia