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How to tell Fly agaric from Panther cap

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

Warning: Fly agaric(Amanita muscaria)

Warning: Panther cap(Amanita pantherina)

The short answer

Fly agaric and Panther cap look alike, so they're easy to mix up — but Fly agaric is poisonous, while Panther cap is poisonous. The main visible difference: size: Fly agaric — large (over 15 cm), Panther cap — medium (5–15 cm). The mushrooms also differ in the following features: cap color, smell, partner trees. If you have even the slightest doubt, leave the mushroom be.

Two fly agarics (Amanita muscaria) seen from ground level against pines and sky: warty red caps and a stout white stem

Fly agaric

Amanita muscaria

PoisonousExpert-verified
Panther cap (Amanita pantherina) from low down: brown cap with white warts on a white stem amid golden oak leaves

Panther cap

Amanita pantherina

PoisonousExpert-verified

📊 Comparing characteristics

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

Comparison of characteristics: Fly agaric and Panther cap
Edibility class

Fly agaric

Poisonous

Panther cap

Poisonous
Season

Fly agaric

SummerAutumn

Panther cap

SummerAutumn
Use

Fly agaric

Not eaten

Panther cap

Not eaten
⚠ Size

Fly agaric

Large (over 15 cm)

Panther cap

Medium (5–15 cm)
⚠ Cap color

Fly agaric

RedOrange

Panther cap

BrownGrey
Cap shape

Fly agaric

ConvexFlat

Panther cap

ConvexFlat
Cap surface

Fly agaric

Scaly

Panther cap

Scaly
Taste

Fly agaric

Neutral taste

Panther cap

Neutral taste
⚠ Smell

Fly agaric

Neutral

Panther cap

NeutralRadicate
Flesh color change

Fly agaric

No change

Panther cap

No change
Hymenophore

Fly agaric

Gilled

Panther cap

Gilled
Stem

Fly agaric

CentralBulbous

Panther cap

CentralBulbous
Ring (veil)

Fly agaric

Ring present

Panther cap

Ring present
Volva

Fly agaric

Volva present

Panther cap

Volva present
Substrate

Fly agaric

Soil

Panther cap

Soil
Nutrition type

Fly agaric

Mycorrhizal

Panther cap

Mycorrhizal
⚠ Partner trees

Fly agaric

BirchPineSpruce

Panther cap

OakBeech

📅 Seasonality

Fly agaric

Fruiting season

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

July – November

Panther cap

Fruiting season

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

July – October

🔬 Morphology

Cap

Fly agaric

Cap 8–20 cm across, egg-shaped when young, then flattened-convex or almost flat. The surface is bright red or orange-red, fading to orange in old mushrooms. It is covered with white or yellowish warts — remnants of the universal veil (easily washed off by rain).

Panther cap

Cap 5–12 cm across, spherical or bell-shaped when young, later flattened-convex. The surface is shiny, brown, gray-brown or olive-brown, dotted with small pure-white warts, usually spread fairly evenly; rain can wash them off.

Hymenophore

Fly agaric

Gills free, crowded, white, not changing color. Spore print white. White gills combined with a red cap, a ring and a volva are a reliable combination of amanita features.

Panther cap

Gills free, white, crowded. They don't change color when damaged — this sets them apart from a similar edible species (the blusher), whose flesh and gills turn pink.

Stem

Fly agaric

Stem 8–18 cm tall, 1.5–2.5 cm thick, white, cylindrical, with a bulbous, swollen base. There is a well-developed membranous ring in the upper part and a characteristic ragged, sheath-like volva at the base, often hidden in the soil.

Panther cap

Stem 6–12 cm tall, white, smooth, with a thin membranous ring in the upper part. At the base there is a bulb with remnants of the veil — not a free, sac-like volva, but one or more white woolly rings or a spiral above a narrow gutter on the bulb; this rimmed bulb distinguishes it from the blusher.

Flesh

Fly agaric

Flesh soft, white, yellowish under the cap skin. Does not change color when cut. No distinctive smell. It contains toxic isoxazoles even in flesh that has no smell and no sharp taste.

Panther cap

Flesh firm, white, does not turn pink when damaged (a critical feature that distinguishes it from the similar blusher). No distinctive taste. The toxins are spread evenly throughout the whole fruiting body.

Smell

Fly agaric

Smell faint, neutral or slightly sweetish. The very absence of a repulsive smell is part of the fly agaric's “trap”: the mushroom looks attractive and doesn't put you off by its smell.

Panther cap

Smell faint, neutral or slightly unpleasant — subtly radish-like or earthy. It is neither sharp nor repulsive, which makes it harder to sense the danger while foraging.

📍 Habitats

Fly agaric

Conifer forestMixed forestDeciduous forest

Panther cap

Deciduous forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Fly agaric and Panther cap be mixed up?
Yes. These species look alike, and Panther cap is poisonous, so a mistake is dangerous. Pay attention to the size, cap color, smell.
How to tell Fly agaric from Panther cap?
The main differences: size: Fly agaric — large (over 15 cm), Panther cap — medium (5–15 cm); cap color: Fly agaric — red, orange, Panther cap — brown, grey; smell: Fly agaric — neutral, Panther cap — neutral, radicate. The full table of characteristics is higher up on this page.
Which is more dangerous — Fly agaric or Panther cap?
More dangerous: Panther cap, which is poisonous. Fly agaric is poisonous. If you have even the slightest doubt, don't pick the mushroom.
Is Panther cap edible?
Panther cap — poisonous. It must not be picked or eaten.
When do Fly agaric and Panther cap grow?
Fly agaric — July–November; Panther cap — July–October.

Sources

  • [1]Атлас грибів України, Зеров Д.К. (1979)
  • [2]GBIF