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How to tell Fool's funnel from Frosty funnel

How they differ, how to recognize them and which is more dangerous — a mushroom comparison

Warning: Fool's funnel(Clitocybe rivulosa)

Warning: Frosty funnel(Clitocybe phyllophila)

The short answer

Fool's funnel and Frosty funnel look alike, so they're easy to mix up — but Fool's funnel is poisonous, while Frosty funnel is poisonous. The main visible difference: cap shape: Fool's funnel — flat, Frosty funnel — funnel-shaped. The mushrooms also differ in the following features: substrate. If you have even the slightest doubt, leave the mushroom be.

Fool's funnel (Clitocybe rivulosa)

Fool's funnel

Clitocybe rivulosa

PoisonousExpert-verified
Frosty funnel (Clitocybe phyllophila)

Frosty funnel

Clitocybe phyllophila

PoisonousExpert-verified

📊 Comparing characteristics

⚠ Highlighted rows are the key differences between the edible and the dangerous mushroom

Comparison of characteristics: Fool's funnel and Frosty funnel
Edibility class

Fool's funnel

Poisonous

Frosty funnel

Poisonous
Season

Fool's funnel

SummerAutumn

Frosty funnel

SummerAutumn
Use

Fool's funnel

Not eaten

Frosty funnel

Not eaten
Size

Fool's funnel

Small (up to 5 cm)

Frosty funnel

Small (up to 5 cm)
Cap color

Fool's funnel

WhiteCreamPink

Frosty funnel

WhiteCreamPink
⚠ Cap shape

Fool's funnel

Flat

Frosty funnel

Funnel-shaped
Cap surface

Fool's funnel

Smooth

Frosty funnel

Smooth
Taste

Fool's funnel

Mild

Frosty funnel

Mild
Smell

Fool's funnel

Floury

Frosty funnel

Floury
Flesh color change

Fool's funnel

No change

Frosty funnel

No change
Hymenophore

Fool's funnel

Gilled

Frosty funnel

Gilled
Stem

Fool's funnel

Central

Frosty funnel

Central
Ring (veil)

Fool's funnel

No ring

Frosty funnel

No ring
Volva

Fool's funnel

No volva

Frosty funnel

No volva
⚠ Substrate

Fool's funnel

Soil

Frosty funnel

SoilForest litter
Nutrition type

Fool's funnel

Saprotroph

Frosty funnel

Saprotroph
⚠ Partner trees

Fool's funnel

—

Frosty funnel

OakBeechHornbeamBirch

📅 Seasonality

Fool's funnel

Fruiting season

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

August – November

Frosty funnel

Fruiting season

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

August – November

🔬 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.

Frosty funnel

Cap 3-7 cm across, convex when young, becoming funnel-shaped over time, with a depressed center and a thin wavy margin. Color whitish to cream, with a pale pink or ochre tint in the center and a characteristic silky, waxy sheen. Slightly sticky in wet weather, matte when dry.

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.

Frosty funnel

Gilled hymenophore. Gills crowded, thin, decurrent down the stem. Color whitish to cream, taking on a pale pink tint with age. Spore print white to pale pinkish-cream.

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.

Frosty funnel

Stem 3-6 cm tall, 0.4-1 cm thick, cylindrical, often thickening toward the base. Color whitish to cream, with white mycelial fuzz at the base. Surface smooth, no ring.

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".

Frosty funnel

Flesh thin, white, soft. Does not change color when cut. It has a pleasant sweetish smell and a mild taste — as with other poisonous Clitocybe, the lack of any unpleasant smell makes it all the more treacherous.

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.

Frosty funnel

Sweetish, pleasant. Raises no suspicion. Taste mild. Don't rely on smell or taste for identification — they give no hint of toxicity.

📍 Habitats

Fool's funnel

MeadowField

Frosty funnel

Deciduous forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Fool's funnel and Frosty funnel be mixed up?
Yes. These species look alike, and Frosty funnel is poisonous, so a mistake is dangerous. Pay attention to the cap shape, substrate.
How to tell Fool's funnel from Frosty funnel?
The main differences: cap shape: Fool's funnel — flat, Frosty funnel — funnel-shaped; substrate: Fool's funnel — soil, Frosty funnel — soil, forest litter. The full table of characteristics is higher up on this page.
Which is more dangerous — Fool's funnel or Frosty funnel?
More dangerous: Frosty funnel, which is poisonous. Fool's funnel is poisonous. If you have even the slightest doubt, don't pick the mushroom.
Is Frosty funnel edible?
Frosty funnel — poisonous. It must not be picked or eaten.
When do Fool's funnel and Frosty funnel grow?
Fool's funnel — August–November; Frosty funnel — August–November. Their seasons overlap, so be especially careful.

Sources

  • [1]Вікіпедія (українська)
  • [2]Атлас грибів України, Зеров Д.К. (1979)
  • [3]MycoBank Database
  • [4]Index Fungorum
  • [5]GBIF
  • [6]iNaturalist Ukraine