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 mistaken for edible mushrooms gathered in other countries. Contact the Poison Information Centre (22 59 13 00) if you suspect poisoning.
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.
Ingesting only a small amounts of these three mushrooms can cause severe poisoning. Clinical signs occur after a minimum of 6 hours, and include an explosive, watery diarrhoea, abdominal pain and vomiting. 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.
Amanita virosa (Norwegian: Hvit fluesopp)
The entire mushroom is white (cap, stem, gills and flesh). The stipe has a ring, but this might fall off. At the base of the stem there is a volva (bag). Destroying angel is common in woodland.
Amantia phalloides (Norwegian: Grønn fluesopp)
The gills and the stipe are white. The stipe has a ring, but this might fall off. At the base of the stem there is a volva (bag). Death cap is rare in Norway.
Galerina marginata (Norwegian: Flatklokkehatt)
The cap and gills are yellow–brown. The stipe 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.
Ingesting only a small amount of the webcap can cause severe kidney damage. Clinical signs do not appear until at least 36 hours after ingestion. These include 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.
Cortinarius Rubellus (Norwegian: Spiss giftslørsopp)
The entire mushroom is reddish-brown (cap, stipe, gills and flesh). Deadly webcap is common in woodland.
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. Cortinarius orellanus
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.
Other poisonous mushrooms
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 the stipe is white with a ring and bulbous base. The cap is reddish or brownish in colour, usually with white spots.
These three agaric mushrooms contain a toxin that affects 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
Leccinum versipelle (Norwegian: Rødskrubb)
Orange birch bolete has a reddish-brown cap and black scales on a white stipe. When cut, the stem turns grey-blue. The mushroom is common throughout Norway.
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.
Paxillus involutus (Norwegian: Pluggsopp)
This mushroom has a brown cap with rolled rim, brown stipe and gills that darken when bruised. Brown roll-rim is common in Norway.
Brown roll-rim contains several different toxins producing a variety of 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 downloaded free of charge from the website in 25 different languages.
The Norwegian mycological and useful plants association (soppognyttevekster.no), organizes practical courses in mushroom identification.