World’s Most Poisonous Mushrooms (FUNGI)

Although only a few of the 70-80 species of poisonous mushrooms are actually fatal when ingested, many of these deadly fungi bear an unfortunate resemblance to edible species and are thus especially dangerous. Read on to learn more about these terrifyingly lethal mushrooms.

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• Death Cap (Amanita phalloides)

  

  death cap mushroom

  Death cap mushroom (Amanita phalloides).

  © Dariusz Majgier/Shutterstock.com

  Perhaps the deadliest of all mushrooms, the death cap is found throughout Europe and closely resembles edible straw mushrooms and caesar’s mushrooms. Its heat-stable amatoxins withstand cooking temperatures and quickly damage cells throughout the body. Within 6 to 12 hours after consumption, violent abdominal pain, vomiting, and bloody diarrhea appear, causing rapid loss of fluid from the tissues and intense thirst. Signs of severe involvement of the liver, kidneys, and central nervous system soon follow, including a decrease in urinary output and a lowering of blood sugar. This condition leads to coma and death in more than 50 percent of the incidents. Notable deaths include Pope Clement VII, who died of accidental death cap poisoning in 1534, and possibly Roman Emperor Claudius in 54 CE.
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• Conocybe filaris

  

  Conocybe filaris

  Poisonous Conocybe filaris mushrooms. This species is a common lawn mushroom in the Pacific Northwest region of the United States. Ingestion can cause lethal organ failure.

  blickwinkel/Alamy

  Conocybe filaris is an innocent-looking lawn mushroom that is especially common in the Pacific Northwest. Featuring the same mycotoxins as the death cap mushroom, C. filaris is potentially fatal if eaten. The onset of gastrointestinal symptoms often occurs 6-24 hours after the mushrooms were consumed, frequently leading to an initial misdiagnosis of food poisoning or the stomach flu. The patient may appear to recover, only to suffer from a life-threatening reappearance of the gastrointestinal distress, coupled with liver and kidney failure.

• Webcaps (Cortinarius species)

  

  webcap mushroom

  Deadly webcaps (Cortinarius rubellus), native to northern Europe. Ingestion of these mushrooms is often fatal, with symptoms taking as long as three weeks to appear.

  © Kesu/Fotolia

  The two species of webcap, the deadly webcap (Cortinarius rubellus) and the fool’s webcap (Cortinarius orellanus), are very similar in appearance to both each other and to a number of edible varieties. These mushrooms feature a poison known as orellanin, which initially causes symptoms similar to the common flu. Orellanin has an insidiously long latency period and may take 2 days to 3 weeks to cause symptoms, often leading to a misdiagnosis. The toxin ultimately causes kidney failure and death if left untreated. In 2008, English author Nicholas Evans mistakenly collected and served webcap mushrooms to his relatives, resulting in hospitalization for four of them. He, his wife, and his brother-in-law all required kidney transplants as a result of the poisoning.
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• Autumn Skullcap (Galerina marginata)

  

  autumn skullcap mushroom

  Toxic autumn skullcaps (Galerina marginata). Sometimes mistaken for hallucinogenic mushrooms, autumn skullcap mushrooms are poisonous and can be deadly if eaten.

  © Thomas Brandt/Fotolia

  Common throughout the Northern Hemisphere and parts of Australia, Galerina marginata is a gilled, wood-rotting mushroom with the same amatoxins as the death cap mushroom. Ingestion causes diarrhea, vomiting, hypothermia, and liver damage, and can result in death if left untreated. While it is not especially similar to edible species, several deaths and poisonings have been attributed to collectors mistaking the autumn skullcap for hallucinogenic Psilocybe mushrooms.

• Destroying Angels (Amanita species)

  

  Destroying angel (Amanita verna)

  Mary W. Ferguson

  The destroying angels are actually several species of all-white mushrooms in the genus Amanita. These incredibly toxic fungi are very similar in appearance to edible button mushrooms and the meadow mushrooms, and have been collected by mistake on numerous occassions. One of these species, Amanita bisporigera, is considered to be the most toxic North American mushroom. Symptoms take 5 to 24 hours to appear and include vomiting, delirium, convulsions, diarrhea, liver and kidney failure, and often lead to death.

• Podostroma cornu-damae

  

  Podostroma cornu-damae

  Toxic fruiting bodies of the fungus Podostroma cornu-damae. The fungus can be confused with edible varities and has been responsible for a number of fatalities in Japan and Korea.

  Image Republic Inc./Alamy

  This rare fungus is native to Asia and has been responsible for a number of fatalities in Japan and Korea. Its red fruiting bodies contain potent toxins known as trichothecene mycotoxins and can cause multiple organ failure in those unlucky enough to consume them. Symptoms of poisoning include stomach pain, peeling skin, hair loss, low blood pressure, liver necrosis, acute kidney failure, and result in death if left untreated.
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• Deadly Dapperling (Lepiota brunneoincarnata)

  

  deadly dapperling

  Deadly dapperling mushrooms (Lepiota brunneoincarnata) found near Massy, France.

  Strobilomyces

  The deadly dapperling is a gilled mushroom known to contain amatoxins. Widely distributed throughout Europe and parts of Asia, the mushroom is fairly innocuous and has been mistaken for edible varieties, though poisonings are not very common. Accidental consumption leads to severe liver toxicity and can have lethal consequences if immediate treatment is not received.

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• credit to: BRITANICA