The 10 Most Poisonous Mushrooms In North America-Let’s find Out

Some people may find mushrooms problematic during camping because it is difficult to identify the poisonous mushrooms. Campers must be selective about which mushrooms they should eat since around 30 wild species are known to be continuously poisonous due to their high toxicity levels. In contrast, 40 others have been confirmed to trigger severe allergic reactions and even death.

Mushroom poisoning affects around 6,000 to 7,000 people annually in the United States. Many poisonous mushrooms do not seem dangerous, and others resemble edible siblings.

Below are the 10 most poisonous mushrooms in North America and their primary characteristics that should be avoided at all costs. Please make sure to look at the pictures carefully to make sure you can recognize them if you come across those specific ones.

How To Identify Poisonous Mushrooms?

Given the right circumstances and enough moisture, a poisonous mushroom will produce fruiting bodies that will breach the surface of the growth medium and mature into species-specific structures. The structures can vary, but they usually comprise the following characteristics:

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It might be parasol- or cup-shaped, conical or circular, uneven, smooth, or covered with little spikes. It may or may not have easily peeled skin. 


The stem connects the cap to the growth medium. It might be long and lean or short and bulky, and it might be hollow or not. Not every mushroom has a stem.

Puffballs, which are huge, spherical, and mainly edible, sometimes grow on rotted wood. Some poisonous mushrooms appear like puffballs when immature, so don’t think that puffy thing on your campsite is safe to eat. 


The gills are the component of the mushroom that produces spores, and they are located underneath the cap and may be curved or made up of many little holes. Some mushrooms have teeth instead of gills, while others, such as chanterelles, have veins. 

Ring Or Annulus:

A ring is frequently wrapped around the stem beneath the cap if one is present. It’s a legacy of the universal veil that the mushroom had to burst through to grow. 


The volva is a swollen region near the stem’s base, often underground. A volva, especially with a ring around it, is sometimes a sign that the mushroom is poisonous.

Top 10 Most Poisonous Mushrooms In North America:

1. Death Cap (Amanita phalloides):

A lot of human deaths, accidental and intentional, have been caused by this deadly poisonous mushroom. The death cap has a significant history and has been linked to the deaths of many notable people, including Roman Emperor Claudius, a pope, and a Russian tsar.

The death cap is widespread in Europe, where it grows in woodlands, most notably under oak trees. It is unfortunately associated or confused with various edible mushrooms, the most famous of which is the paddy straw mushroom, which is enjoyed across Asia. As a result, it has taken some naive immigrants from Asian nations where it does not grow.

It causes severe liver and kidney damage. An adult is said to be killed by 30 grams (1 oz), or around half a mushroom, and many other cases. So if you’re hiking or camping, consume mushrooms only when you are pretty sure it’s edible.

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2. Destroying Angel(Amanita Bisporigera):

Destroying Angel is another Amanita species with a dreadful name. This Amanita is the most common and dangerous mushroom in North America. The all-white cap and stem lead to confusion with button and meadow mushrooms.

The Destroying Angel, like other Amanitas, develops from a white volva egg-like sac, has gills, and a long, thin stem. Its stems are 3-8 inches long on average, making it stand out in the forest like an all-white apparition. None of the regular lookalikes reach this height. Another distinguishing characteristic is the volva sac; if in doubt, look towards the base of the mushroom.

Destroying Angels flourish at meadow boundaries near particular trees. Vomiting, diarrhea, disorientation, and sometimes shocks occur between 5-24 hours after eating the Destroying Angel. Shortly after that, the liver and kidneys fail, potentially leading to death.

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3. Brain Mushroom Or False Morel (Gyromitra Esculenta):

The brain mushroom derives its name from its huge brain-like cap. It typically turns quite dark brown. When raw, this mushroom is fatally poisonous, so you should eat it after proper cooking; moreover, it is considered a delicacy in certain countries.

The poison in this mushroom is called gyromitrin, which, when consumed, converts to monomethylhydrazine (MMH). This poison will mostly impact the liver, the neurological system, and, in some cases, the kidneys.

Symptoms such as diarrhea and vomiting may occur within hours, followed by dizziness, fatigue, and headache. In the worst-case scenario, this will result in a coma and death within a week. The false morel grows in conifer woods in North America.

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4. Deadly Webcap (Cortinarius Rubellus):

Here we have another poisonous mushroom with a similarly terrible name. The webcap is a very inoffensive mushroom that looks like several other species. In reality, it is very poisonous, and ingesting it might kill you within weeks, if not months later, when your kidneys pack in.

Exactly this occurred with Nicholas Evans, author of The Horse Whisperer. They ate poisonous webcaps they had gathered, thinking they were something edible, alongside his wife and two other visitors. Evans was placed on kidney dialysis, and they were all informed they would require kidney transplants.

They were fortunate to be alive. The toxin orellanine is poisonous, comparable to arsenic, and there is no known antidote. It is reported that just tasting and spitting out a little bit of this mushroom will kill you. Aside from kidney failure, other poisoning symptoms are said to be flu-like, and they don’t show up for many days and might last for weeks.

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5. Funeral Bell (Galerina Marginata):

Galerina marginata, sometimes known as the deadly skullcap, is a mushroom that should be treated with care. It contains the same poison as the Death Cap and, if not treated, will cause severe liver damage and maybe death.

The Funeral Bell seems harmless, and most poisonings are caused by misdiagnosis. It’s a “small brown mushroom” that looks like numerous edible species. More specifically, it resembles the hallucinogenic Psilocybe mushroom, and recent overdoses cases result from collectors looking for magical mushrooms.

Funeral Bells grow on decaying wood, mainly but not restricted to conifer species. They grow up In North America, Asia, Australia, and Europe. The Funeral Bell mushroom has a cap in the form of a brown cone, gills, lighter brown, and a tan to a rusty brown stem.

Other than that, it is unremarkable. A membranous ring around the top half of the stem is a crucial identifying characteristic.

This mushroom has been associated with numerous deaths in North America and Europe. Some of the poisonings were assigned to various Galerina species. However, a recent scientific study placed them together under Galerina marginata.

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6. Deadly Dapperling (Lepiota Sp. ):

This one’s name pretty much says it all. This little, tasty-looking mushroom, as well as many others in the Lepiota family, carries the deadly amatoxin, which may damage the liver. This toxin is to blame for 80-90% of all mushroom poisoning fatalities. Amatox ingestion has a death rate of around 50% if untreated and remains at 10% even with therapy. Its earliest symptoms are gastrointestinal discomfort, although death may occur later due to liver failure.

It may be found in conifer woods across Europe and North America, and it has caused numerous fatalities throughout the years. Other members of the family include the similarly appetizing-sounding deadly parasol.

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7. Pholiotina Rugosa (Conocybe Filaris):

The conical crown and rust-colored gills of the conocybe filaris, which resemble to a magic mushrooms, are often seen blooming on lawns in the Pacific Northwest during the rainy months. It is because the conocybe filaris grows in moist environments.

On the other hand, consuming a Conocybe filaris mushroom results in irreparable damage to the liver due to the high levels of amatoxin that are contained in the mushroom.

Symptoms of gastrointestinal distress often occur between six and twenty-four hours after consumption. They are similar to those of stomach flu or food poisoning. Patients may occasionally be able to recover from their initial symptoms but later start to have significant pain throughout their digestive tract as well as the failure of their liver and kidneys.

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8. Ivory Funnel (Clitocybe Dealbata):

The ivory funnel is a kind of toadstool mushroom that may be found on lawns and other grassy areas in both Europe and North America. Muscarine is present in the ivory funnel in poisonous quantities. This kind of mushroom has a cap that ranges in size from around 2 to 4 centimeters (cm), and its stripe is about 0.5-1 cm in width and 2–3.5 cm in height.

After 15 to 30 minutes of its consumption, campers poisoned by muscarine will experience increased salivation, tear formation, and sweating. Consuming high quantities might result in severe abdominal pain, nausea, hazy vision, diarrhea, and difficulty breathing.

After 2 hours, the effects of poisoning begin to wear off, and deaths are not common. However, heart and respiratory failure are possible outcomes in the most extreme instances.

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9. Angel Wing (Pleurocybella Porrigens):

Angel wing is a kind of mushroom that can be found all across North America. It got its name for two reasons: first, because of how it appears, and second, because eating it has a serious chance of sending you to Heaven.(Death)

There was a period when the angel wing was thought to be edible, and it seems that for several years, there were no cases of poisoning that were documented as a result of swallowing it.

It changed in 2004 when close to 60 people throughout Japan felt unwell after eating them for the first time. Out of them, 17 passed away throughout the next month.

Although the mechanism of poison in these mushrooms is not fully known, a unique amino acid responsible for brain cell death has been identified. Additionally, there is a possibility that these mushrooms contain elevated quantities of cyanide.

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10. Fool’s Funnel (Clitocybe Rivulosa):

The Fool’s Funnel seldom kills, yet eating this deadly mushroom will severely injure you. This mushroom has significant quantities of muscarine, which acts as a nerve agent when consumed. It produces severe sweating, drooling, and tear formation within 15 minutes of intake.

Abdominal discomfort, gastrointestinal distress, and perhaps respiratory arrest are caused by large dosages of the Fool’s Funnel. The overall malaise generally lasts a couple of hours after use and then diminishes.

Fool’s Funnel may be found in meadows, lawns, and any grassy area in North America from summer through fall. 

These deadly mushrooms are tiny, white, and seem to be harmless. The caps are white and funnel-shaped, with densely packed white gills underneath. Fool’s Funnel stems are likewise white and without any distinguishing features.

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Additional Resources

If you are looking for more tutorials, walkthroughs and troubleshooting about camping and enjoying the outdoors, here are some additional posts to check out:


Hopefully, this article on the Top 10 Most Poisonous Mushrooms in North America was helpful! Before eating the mushrooms, especially during hiking or camping adventures, always double-check whether they are edible. Do Not Take Chances if you don’t recognize a mushroom, leaving it alone might just save your life.! Thanks for reading! If you think I forgot something or if you simply want to share a story or some advice, feel free to leave your comment below. Be safe and have fun.!

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