Funnel Mushrooms: Edible, Poisonous and How Not to Get It Wrong

Funnel mushrooms (the genus Clitocybe and its close relatives) are gilled mushrooms with a funnel-shaped or convex cap, gills that run down the stem, and a white spore print. In autumn they are easy to find: they grow in broadleaf and conifer litter, often in whole rings. But this is a genus where “similar” does not mean “equally safe”. The white funnels contain muscarine and cause severe poisoning within as little as half an hour. And the familiar grey clouded funnel, long cooked in Ukraine, is now one that several European mushroom-control services advise against eating.

Below: how to recognise a funnel mushroom in general, which species turn up most often, and where you must not make a mistake.

How to recognise a funnel mushroom

Funnel mushrooms are recognised by their structure, not their colour:

• The gills run down the stem. They don't stop short at it but seem to flow downwards. In mature mushrooms the cap often becomes a funnel.
• The spore print is white or cream. Place a cap gills-down on dark paper for a few hours and you will see a pale print.
• No ring and no volva. The stem is smooth, often fluffy with mycelium at the base.
• They grow on litter, not on wood, often in rows or rings.

These features tell you “this is a funnel mushroom or something very close”. But edible and poisonous species share them, so from here on the details decide everything.

Clouded funnel: eaten for a long time, but no longer recommended

The clouded funnel, or grey funnel (Clitocybe nebularis; the Ukrainian atlas calls it the grey clitocybe), is the largest and most noticeable. The cap is 6–20 cm, grey, as if dusted with a bloom; the gills are crowded, whitish, turning cream with age. The stem is thick and widens towards the base. The smell is sweetish and fruity; to some people it is reminiscent of swede. It grows from September to November, often in large rings.

Ukrainian handbooks have long called it “conditionally edible: boil it and it's fine”. However, VAPKO, the Swiss association of official mushroom inspectors, has reclassified it as inedible. There are two reasons: the mushroom contains nebularine, a substance resembling a building block of RNA whose harm to cells has not been ruled out, and in some people the clouded funnel causes severe digestive upset even after thorough cooking. VAPKO writes that neighbouring countries also advise against eating it. Nebularine in the fruiting bodies has been confirmed by chemical analysis.

Our conclusion is a calm one: many people have eaten this mushroom for years without trouble, but a mushroom that official inspectors no longer let into the kitchen is not the one to pick first.

Aniseed funnel: you recognise it by smell

The aniseed funnel (Clitocybe odora) is small, with a 3–8 cm cap that is blue-green in young mushrooms. Its key feature is a strong smell of aniseed, which you notice as soon as you lift the mushroom to your face. It is considered edible but is more often added in small amounts as a seasoning: the flavour is very pronounced. If a mushroom is green but does not smell of aniseed, it is not this one.

The common funnel and other large funnels

The common funnel (Infundibulicybe gibba) is a reddish, flesh-coloured funnel on a slender stem, growing in the litter of broadleaf woods. The large trooping funnel (Infundibulicybe geotropa) keeps to woodland edges and clearings. Both are traditionally considered edible. But with these two the danger lies not in the mushrooms themselves but in what grows nearby: white poisonous funnels may be growing in the next clearing.

White funnels: the most dangerous in the genus

These are the ones you need to know by sight.

• The fool's funnel (Clitocybe rivulosa; in the Ukrainian atlas, the reddish clitocybe; close to it or the same species is the ivory funnel, C. dealbata). Small, 2–5 cm, whitish, as if dusted with frost. It grows not in woods but in grass: on lawns, meadows and pastures, often in rings. The spore print is white. The smell may be mealy.
• The frosty funnel (Clitocybe phyllophila). The cap is 4–10 cm, white, with a frosty bloom; the gills run down the stem. It grows on litter in woodland. Its spore print is not white but pinkish-ochre — remember this, you will need it below.

Both contain muscarine. Poisoning sets in quickly: usually 15 minutes – 2 hours after eating, occasionally up to 5 hours. The person sweats heavily, saliva and tears flow, the pupils constrict, vision blurs, the pulse slows, blood pressure drops, vomiting and diarrhoea follow, and in severe cases there is shortness of breath from fluid in the bronchi. An antidote exists — atropine — and doctors give it according to the state of the patient's breathing. In a series of 14 patients with muscarine poisoning (from mushrooms of a different genus, but with the same toxin), all recovered within 12 hours with treatment. The risk is highest for people with heart or lung disease.

So if sweating and drooling appear after eating white mushrooms from a clearing, don't wait — call an ambulance. What to do before it arrives is covered in our article mushroom poisoning: signs and first aid.

In 2023, on the basis of DNA, mycologists moved the white poisonous funnels and the aniseed funnel into the genus Collybia, so in newer field guides you may see the names Collybia rivulosa and Collybia phyllophila. The mushrooms themselves have not changed.

How not to confuse them with the miller and St George's mushroom

White funnels most often end up in the basket in place of two edible mushrooms.

The miller (Clitopilus prunulus) is also white, also has gills that run down the stem and also smells of flour. The usual advice “tell them apart by smell” does not work here: the fool's funnel can smell just the same. The spore print is more reliable: the miller's is pink, the fool's funnel's is white. But even this rule is not absolute: the frosty funnel has a pinkish print. So if you have no experience with the miller, a white mushroom with a funnel is best left alone. More on this pair in the article the miller and the poisonous funnels.

St George's mushroom (Calocybe gambosa) grows in the same meadows, but in spring, from April to early July. It has a thick, fleshy cap, gills that do not run down the stem, and a strong mealy smell. The white funnels appear in those spots later, from July. How to tell spring white mushrooms apart we showed with our own photos in the article spring white gilled mushrooms and their lookalikes.

A short rule for funnel mushrooms

• Clouded funnel: not a first mushroom for a beginner; European services no longer recommend it.
• Green and smelling of aniseed: that is the aniseed funnel, taken in small amounts.
• Any white funnel, especially from the grass of a clearing or a lawn: leave it.
• Unsure of the species? Take a spore print — or better, leave the mushroom in the woods.