How to tell Field mushroom from Fool's funnel
How they differ, how to recognize them and which is more dangerous — a mushroom comparison
Warning: Fool's funnel(Clitocybe rivulosa)
POISONOUS
Eating it causes poisoning. Do not pick it unless you have identified it with certainty.
Toxin: muscarine in high concentration. Symptoms begin 15-60 minutes after eating (fast). The classic muscarinic syndrome (PSL): profuse salivation (liters of it), heavy sweating that soaks through clothing, tearing, runny nose, constricted pupils (miosis), bronchospasm with a feeling of suffocation, bradycardia down to 30-40 bpm, a drop in blood pressure, intestinal cramps, diarrhea, nausea. In severe cases — collapse, pulmonary edema, risk of cardiac arrest. The antidote is atropine, given in hospital under ECG monitoring. If you suspect poisoning, call 112 or your local emergency number immediately. Keep the mushroom remains and any vomit. The prognosis is favorable with prompt treatment (1-2 hours).
If you suspect poisoning, call an ambulance immediately: 112 (the European emergency number) or your local emergency number
The short answer
Field mushroom and Fool's funnel look alike, so they're easy to mix up — but Field mushroom is edible, while Fool's funnel is poisonous. The main visible difference: season: Field mushroom — spring, summer, autumn, Fool's funnel — summer, autumn. The mushrooms also differ in the following features: use, size, cap color. If you have even the slightest doubt, leave the mushroom be.

Fool's funnel
Clitocybe rivulosa

Field mushroom
Agaricus campestris
📊 Comparing characteristics
⚠ Highlighted rows are the key differences between the edible and the dangerous mushroom
| Characteristic | Fool's funnel | Field mushroom |
|---|---|---|
| ⚠ Edibility class | Fool's funnel Poisonous | Field mushroom Edible |
| ⚠ Season | Fool's funnel SummerAutumn | Field mushroom SpringSummerAutumn |
| ⚠ Use | Fool's funnel Not eaten | Field mushroom CulinaryCook freshFreezing |
| ⚠ Size | Fool's funnel Small (up to 5 cm) | Field mushroom Medium (5–15 cm) |
| ⚠ Cap color | Fool's funnel WhiteCreamPink | Field mushroom WhiteCream |
| ⚠ Cap shape | Fool's funnel Flat | Field mushroom ConvexFlat |
| ⚠ Cap surface | Fool's funnel Smooth | Field mushroom DrySmooth |
| ⚠ Taste | Fool's funnel Mild | Field mushroom Mild |
| ⚠ Smell | Fool's funnel Floury | Field mushroom Pleasant, mushroomyAnise |
| ⚠ Flesh color change | Fool's funnel No change | Field mushroom Reddening |
| Hymenophore | Fool's funnel Gilled | Field mushroom Gilled |
| ⚠ Stem | Fool's funnel Central | Field mushroom CentralSolid |
| ⚠ Ring (veil) | Fool's funnel No ring | Field mushroom Ring present |
| Volva | Fool's funnel No volva | Field mushroom No volva |
| Substrate | Fool's funnel Soil | Field mushroom Soil |
| Nutrition type | Fool's funnel Saprotroph | Field mushroom Saprotroph |
📅 Seasonality
Fool's funnel
Fruiting season
August – November
Field mushroom
Fruiting season
May – October
🔬 Morphology
Cap
Fool's funnel
The cap is 2-5 cm across, convex in young mushrooms, becoming flat and spread out or slightly funnel-shaped with a thin wavy margin. The color is whitish to cream, with characteristic pinkish-cream concentric zones or streaks from the center to the margin — a diagnostic feature. The surface is silky-matte; in wet weather the skin is somewhat sticky.
Field mushroom
Cap 5–15 cm across, spherical in young mushrooms, then flat or slightly umbonate. The surface is white or slightly creamy and cracks in dry weather. Fibrous scales may appear as it matures. The margin is inrolled at first, then straight.
Hymenophore
Fool's funnel
Gilled hymenophore. The gills are crowded and thin, decurrent down the stem (a feature typical of the genus Clitocybe). Whitish to pale pink. The spore print is white.
Field mushroom
Gills free (not reaching the stem), crowded, delicate pink at first, then bright pink, and chocolate-brown or blackish in mature mushrooms. The pink color of the gills is a key safety feature that distinguishes the field mushroom from poisonous species with white gills.
Stem
Fool's funnel
The stem is 2-5 cm tall, 0.4-0.8 cm thick, slender, cylindrical, often curved. Whitish to cream, with white mycelial fuzz at the base. The surface is smooth, with no ring.
Field mushroom
Stem 4–8 cm tall, 1–2 cm thick, cylindrical, solid, straight. White in color. A characteristic firm membranous ring in the middle of the stem. No volva.
Flesh
Fool's funnel
The flesh is thin, white, watery and brittle. It does not change color when cut. A faint, sweetish smell and mild taste — dangerously "normal".
Field mushroom
Flesh firm, white, turns slightly pink when cut or stays unchanged. It does not turn yellow (yellowing is a sign of poisonous species). The taste is pleasant and richly mushroomy.
Smell
Fool's funnel
Faint, sweetish and not distinctive. Nothing alarming. The taste is mild. Neither smell nor taste gives away that it is poisonous.
Field mushroom
Smell pronounced, anise-almond with mushroomy notes. This is one of the most aromatic wild mushrooms. With cooking the aroma intensifies and can dominate the dish.
📍 Habitats
Fool's funnel
Field mushroom
👀 Similar mushrooms — don't mix them up!
Fairy ring champignon
EdibleSt George's mushroom
EdibleField mushroom
EdibleIvory funnel
PoisonousFrosty funnel
PoisonousSplit fibrecap
PoisonousAniseed funnel
EdibleThe miller
EdibleDeath cap
Deadly poisonousYellow stainer
PoisonousHorse mushroom
EdibleButton mushroom
EdibleDeadly fibrecap
Deadly poisonousShield pinkgill
Conditionally edibleFool's funnel
PoisonousDeadly dapperling
Deadly poisonousLepiota helveola
Deadly poisonousWhite dapperling
UnknownDestroying angel
Deadly poisonousAgaricus subperonatus
EdibleAgaricus squamuliferus
EdibleBlushing wood mushroom
EdibleAgaricus comtulus
EdibleAgaricus tabularis
EdiblePavement mushroom
Edible❓ Frequently asked questions
Can Field mushroom and Fool's funnel be mixed up?
How to tell Field mushroom from Fool's funnel?
Which is more dangerous — Field mushroom or Fool's funnel?
Is Fool's funnel edible?
When do Field mushroom and Fool's funnel grow?
Sources
- [1]Вікіпедія (українська)
- [2]Атлас грибів України, Зеров Д.К. (1979)
- [3]MycoBank Database
- [4]Index Fungorum
- [5]GBIF
- [6]iNaturalist Ukraine