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Common lawn mushroom (Pholiotina rugosa) -

Also known as Conocybe filaris, this mushroom is deadly poisonous. If ingested, toxins will quickly attack the liver. This species is responsible for many deaths.

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Autumn Skullcap (Galerina marginata) -

An extremely poisonous species, expect severe liver damage with vomiting and diarrhea if ingested. Fatal if not treated rapidly.

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Fool's funnel -

Blurred vision, labored breathing, and increased salivation and perspiration are classic symptoms of ingestion, though death is rare.

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Angel's wings (Pleurocybella porrigens) -

Historically regarded as edible, this species of fungus has nevertheless been implicated in a number of deaths involving those with pre-existing liver problems. The average age of those affected was 70.

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Orange birch bolete (Leccinum versipelle) -

An edible mushroom but only safe to eat given thorough heating—frying or boiling for up to 30 minutes. Undercooked, it can cause nausea and vomiting.

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Brown roll-rim (Paxillus involutus) -

Poisoning symptoms are rapid if this fungus is ingested. Vomiting and diarrhea lead to reduced urine output and anemia. Shock, acute renal and respiratory failure follow, and death in extreme cases. There is no antidote.

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Yellow-staining mushroom (Agaricus xanthodermus) -

So named for the yellow coloration at the base of the stem when cut, most people have suffered serious gastric problems after eating this mushroom. Others, however, have experienced no ill effects whatsoever.

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American abrupt-bulbed lepidella (Amanita abrupta) -

Laboratory tests have demonstrated chemical-driven renal damage and liver cell necrosis as a result of ingesting this species of fungus. Pictured is an immature specimen.

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European solitary amanita (Amanita echinocephala) -

A rare and protected mushroom, and edible by some. However, it can have a nephrotoxic effect in the kidneys. Best left alone.

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Hongo's false death cap (Amanita pseudoporphyria) -

Nephrotoxin poisoning is also associated with ingestion of this mushroom, with incidences of acute kidney failure in some cases.

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Green-spored lepiota (Chlorophyllum molybdites) -

Not for nothing has this mushroom been nicknamed "vomiter." Ingesting this highly poisonous mushroom causes acute gastrointestinal distress, although death is rare.

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Common ink cap (Coprinopsis atramentaria) -

An anomaly on this list in that this mushroom can be eaten but is poisonous when consumed with alcohol. Symptoms can be frightening and include agitation, palpitations, and tingling in limbs, but none are fatal.

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Livid entoloma (Entoloma sinuatum) -

The adverse effects of consuming this mushroom kick in 30 minutes after ingestion, and are highly unpleasant. Diarrhea, vomiting, and headache can be followed by acute liver toxicity and delirium.

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Poison pie (Hebeloma crustuliniforme) -

While moderately poisonous, this common mushroom can still cause severe gastrointestinal discomfort. Colicky abdominal pain is typical of the symptoms.

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Rosy bonnet (Mycena rosea) -

Very attractive perhaps, but this is a poisonous species of fungi and should not be collected for food. It contains the dangerous toxin muscarine.

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Jack-O'lantern mushroom (Omphalotus illudens) -

Poisonous when eaten, whether raw or cooked, and typically causes vomiting, cramps, and diarrhea.

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Torn fibrecap (Inocybe lacera) -

Contains the poisonous chemical muscarine and if ingested can lead to urination, defecation, and gastrointestinal problems, among other unpleasant effects.

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Fool's webcap (Cortinarius orellanus) - This is one of the world's most poisonous mushrooms. It contains the highly toxic compound orellanine, which can induce flu-like symptoms before causing renal failure. There is no known antidote to orellanine and emergency medical attention should be sought to prevent serious injury and possible death.

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Sulphur tuft (Hypholoma fasciculare) - A common woodland mushroom that can cause vomiting, diarrhea, and sometimes convulsions if consumed. Paralysis and impaired vision have been recorded in extreme cases.

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Elfin saddle (Helvella crispa) - Beware! Some guidebooks cite this quaint-sounding fungus as edible. But treat this advice with suspicion. Research suggests that ingesting this mushroom can cause severe sporadic intoxications.

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European destroying angel (Amanita virosa) - Its name alone is fair warning. Destroying angels are among the most toxic known mushrooms. Damage to liver and kidney tissues is irreversible. If not treated quickly enough, anyone ingesting this deadly mushroom will die.

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Panther cap (Amanita pantherina) - A beautiful but poisonous fungus, this is a deadly toadstool that causes hallucinations and sickness. In some cases, ingesting it has proved fatal.

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The sickener (Russula emetic) -

Another mushroom whose common name refers to the considerable gastrointestinal distress they cause when accidentally consumed.

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Death cap (Amanita phalloides) - Deadly poisonous, and one of the most dangerous toadstools out there! It is estimated that as little as half a mushroom contains enough toxin to kill an adult human. Avoid at all costs.

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Fly agaric (Amanita muscaria) - Famous for its brightly red colored cap, this is arguably the most iconic of toadstool species. But looks deceive. Fly agaric is poisonous and infamous for its psychoactive and hallucinogenic properties.

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Deadly webcap (Cortinarius rubellus) - Highly toxic and guaranteed to cause kidney failure, which is often irreversible. If not treated quickly, anyone ingesting this species of fungus will most likely die.

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Deadly dapperling (Lepiota brunneoincarnata) -

Early symptoms are gastrointestinal but as deadly amounts of alpha-amanitin are absorbed victims can suffer severe liver damage as well.

See also: Foods you should avoid when eating out

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