Poisonous mushrooms in Norway

​Edible, inedible and poisonous mushrooms all grow in the forest. Some of the most poisonous mushrooms that grow in Norway can easily be confused with edible mushrooms gathered in other countries. Contact the Poison Information Centre (22 59 13 00) if you suspect poisoning.

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Amanita muscaria var. muscaria.
Foto: Per Marstad
​​​​Good advice when picking mushrooms:
  • Only eat mushrooms you are 100% sure are safe.
  • Never try to taste an unknown mushroom! Even a poisonous mushroom can have a mild flavour.
  • Use up-to-date literature on mushrooms.
  • Throw away all worm-eaten or rotten mushrooms.

Poisonous mushroom group 1

Toxicity

Even very small amounts of these three mushrooms can cause severe poisoning. After a minimum of 6 hours, an explosive, watery diarrhoea, abdominal pain and vomiting starts. There is a high risk of life-threatening liver damage within 2 - 3 days. If you suspect you have ingested this mushroom, contact the Norwegian Poison Information Centre (22 59 13 00) for advice.

Destroying angel

Amanita virosa
(Norwegian: Hvit fluesopp)

The entire mushroom is white (cap, stem, gills and flesh). The stem has a ring, but this might fall off. The base of the stem has a sheating volva (bag). Destroying angel is common in woodland.
 

Death cap

Amanita phalloides
(Norwegian: Grønn fluesopp)

The colour of the cap can vary from green to brown and yellow. The gills and the stem are white. The stem has a ring, but this might fall off. The base of the stem has a sheating volva (bag). Death cap is rare in Norway.
 

Funeral bell

Galerina marginata
(Norwegian: Flatklokkehatt)

The cap and gills are yellow–brown. The stem varies from grey to brown. This is a small mushroom, usually found in clusters on bark and tree stumps. Funeral bell is common in Norway.

Poisonous mushroom group 2

​Toxicity

Even very small amount of the two webcaps can cause severe kidney damage. Clinical signs do not appear until minimum 36 hours after ingestion consisting of nausea, abdominal pain, malaise and increased or reduced amount of urine. There is a high risk of developing severe kidney failure within a period of 3 – 10 days. If you suspect you have ingested these webcaps, contact the Norwegian Poison Information Centre (22 59 13 00) for advice.

deadly webcap.pngDeadly webcap

Cortinarius rubellus
(Norwegian: Spiss giftslørsopp)

The entire mushroom is reddish-brown (cap, stem, gills and flesh). Deadly webcap is common in woodland.
 


fool’s webcap.pngFool’s webcap

Cortinarius orellanus
(Norwegian: Butt giftslørsopp)

Looks like the deadly webcap, but has a rounded cap. Fool’s webcap is a rare mushroom growing in deciduous forests. 



webcaps.pngDangerous misidentification​​


Deadly webcap grow in the same places as the edible Trumpet chanterelle (Craterellus tubaeformis), and the two species are similar in colour (see photo). It is important to check each mushroom you collect to make sure the deadly webcap is not mixed in with any edible chanterelles.

Poisonous mushroom group 3

red fly agaric.png Red fly agaric / Brown fly agaric / Panther agaric

Amanita muscaria var. muscaria / var. regalis / pantherina
(Norwegian: Rød / Brun / Panter fluesopp)

These mushrooms have white gills and a stem with a ring. The base of the stem is bulbous. The cap is reddish or brownish in colour, usually with white spots.

Toxicity

These three agaric mushrooms contain a toxin affecting the nervous system. Clinical signs usually appear ½ - 3 hours after ingestion. Small amounts ingested may cause confusion, dizziness and stomach upsets. Ingestion of larger amounts can cause muscle tremors and other symptoms requiring hospital treatment. 
 

orange birch bolete.png

Orange birch bolete

Leccinum versipelle
(Norwegian: Rødskrubb)

Orange birch bolete has a reddish-brown cap and black scales on a white stem. The flesh of the mushroom darkens when cut. The mushroom is common throughout Norway.

Toxicity

Orange birch bolete is edible if heated for a minimum of 15-20 minutes. Orange birch bolete insufficiently heated is probably the mushroom causing most cases of stomach upsets in Norway. Nausea, vomiting, diarrhoea and abdominal pain typically occur a few hours after ingestion. Symptoms usually pass within 1-2 days. Ingestion of large amounts may cause severe gastric distress and require hospitalization.​​​

brown roll-rim.pngBrown roll-rim​​

Paxillus involutus
(Norwegian: Pluggsopp) 

This mushroom has a brown cap with rolled rim, brown stem and gills that become dark when applying pressure.  Brown roll-rim is common in Norway.

Toxicity

Brown roll-rim contains several different toxins producing various symptoms. Vomiting, diarrhoea and abdominal pain may occur ½ - 3 hours after ingesting raw mushrooms. Repeated ingestion of heated Brown roll-rim can cause serious poisoning with damage to blood cells and kidneys.

Get a copy of the brochure

This information was produced by the Norwegian Poison Information Centre (giftinfo.no). An unabridged version in Norwegian is available as a printed booklet or can be download free of charge from the website in 23 languages.

The Norwegian mycological and useful plants association (soppognyttevekster.no), organizes practical courses in mushroom identification.

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