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How to tell Greencracked brittlegill from Death cap

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

Warning: Death cap(Amanita phalloides)

The short answer

Greencracked brittlegill and Death cap look alike, so they're easy to mix up — but Greencracked brittlegill is edible, while Death cap is deadly poisonous. The main visible difference: use: Greencracked brittlegill — culinary, cook fresh, salting, Death cap — not eaten. The mushrooms also differ in the following features: cap color, cap shape, cap surface. If you have even the slightest doubt, leave the mushroom be.

Death cap (Amanita phalloides)

Death cap

Amanita phalloides

Deadly poisonousExpert-verified

📊 Comparing characteristics

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

Comparison of characteristics: Death cap and Greencracked brittlegill
⚠ Edibility class

Death cap

Deadly poisonous

Greencracked brittlegill

Edible
Season

Death cap

SummerAutumn

Greencracked brittlegill

SummerAutumn
⚠ Use

Death cap

Not eaten

Greencracked brittlegill

CulinaryCook freshSalting
Size

Death cap

Medium (5–15 cm)

Greencracked brittlegill

Medium (5–15 cm)
⚠ Cap color

Death cap

GreenOlivePale yellow

Greencracked brittlegill

GreenOlive
⚠ Cap shape

Death cap

ConvexFlat

Greencracked brittlegill

ConvexFlatConcave
⚠ Cap surface

Death cap

SmoothFibrous

Greencracked brittlegill

Dry
⚠ Taste

Death cap

Neutral taste

Greencracked brittlegill

Mild
⚠ Smell

Death cap

HoneyNeutral

Greencracked brittlegill

Pleasant, mushroomy
Flesh color change

Death cap

No change

Greencracked brittlegill

No change
Hymenophore

Death cap

Gilled

Greencracked brittlegill

Gilled
⚠ Stem

Death cap

CentralBulbous

Greencracked brittlegill

CentralSolid
⚠ Ring (veil)

Death cap

Ring present

Greencracked brittlegill

No ring
⚠ Volva

Death cap

Volva present

Greencracked brittlegill

No volva
Substrate

Death cap

Soil

Greencracked brittlegill

Soil
Nutrition type

Death cap

Mycorrhizal

Greencracked brittlegill

Mycorrhizal
⚠ Partner trees

Death cap

OakBeechBirch

Greencracked brittlegill

OakBirch

📅 Seasonality

Death cap

Fruiting season

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

July – October

Greencracked brittlegill

Fruiting season

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

June – September

🔬 Morphology

Cap

Death cap

The death cap's cap is 5–15 cm across. In young mushrooms it is hemispherical, later becoming flat and spread out.

The color varies from olive green and yellowish green to grayish and almost white — which is what makes identification tricky. The surface is smooth, slightly slimy in wet weather, with a characteristic radial pattern of darker fibers spreading from the center. The cap margin is even, without striations.

Greencracked brittlegill

Cap 5–15 cm across, spherical in young mushrooms, then flat or slightly depressed. The surface is matte, dry, cracked into small polygonal patches — a characteristic “mosaic” pattern. Color green, grayish green, sometimes with yellowish or grayish zones. The margin is blunt.

Hymenophore

Death cap

The hymenophore is lamellate. The gills are crowded, thin and free — not attached to the stem. In both young and mature mushrooms they stay pure white — this is a critical diagnostic feature.

Not a hint of pink, cream or ochre, as in true Agaricus mushrooms. The gap between the gills and the stem is clearly defined. The veil is white and membranous, completely covering the hymenophore in young specimens.

Greencracked brittlegill

Gills crowded, even, brittle, white. They don't change color when damaged. Spore print white. The gills snap easily under your finger — the brittleness typical of the genus Russula.

Stem

Death cap

The stem is slender, 7–15 cm tall and 1–2 cm thick. Cylindrical, widening at the base into a characteristic club-shaped bulb wrapped in a membranous sack-like volva — the main diagnostic feature.

The color is whitish green, often with a snakeskin pattern of faint bands. In the upper third there's a well-developed, hanging white ring with remnants of the veil. The surface below the ring is faintly scaly.

Greencracked brittlegill

Stem 4–10 cm tall, 1.5–3 cm thick, firm, evenly cylindrical or slightly narrowing toward the base. The surface is white, smooth or slightly wrinkled. No ring and no volva — an important safety feature.

Flesh

Death cap

The flesh is white and doesn't change color when cut — and that's the treacherous part: none of the safety signs foragers are used to relying on work here. The flesh is thin and brittle in the cap, fleshy at the base of the stem.

It doesn't change color on contact with air, neither after a minute nor after an hour. No "lovely white flesh" should reassure you — it's precisely in the white flesh of the death cap that the concentration of amanitins is highest.

Greencracked brittlegill

Flesh firm, white, crunchy, crumbles easily — the so-called “brittlegill” brittleness. It doesn't change color when damaged and releases no milk. The taste is mild and nutty, without bitterness — one of the few brittlegills that can be eaten raw without danger.

Smell

Death cap

The smell of a fresh mushroom is faint and hard to notice; in young specimens it's almost absent. Mature ones develop a slight sickly-sweet note, like wilted honey or stale dough.

This aroma isn't distinct enough to warn an inexperienced forager. Like other poisonous amanitas (the fly agaric, the panther cap), the death cap has only a faint, indistinct smell that gives no warning — yet another treacherous trait. A stronger odor appears only in rotting specimens.

Greencracked brittlegill

Smell unobtrusive, pleasant, faintly nutty. It lacks the sharp or unpleasant notes typical of some poisonous brittlegills. When cooked, the aroma grows stronger, taking on warm woodland notes.

📍 Habitats

Death cap

Deciduous forestMixed forest

Greencracked brittlegill

Deciduous forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Greencracked brittlegill and Death cap be mixed up?
Yes. These species look alike, and Death cap is deadly poisonous, so a mistake is dangerous. Pay attention to the use, cap color, cap shape.
How to tell Greencracked brittlegill from Death cap?
The main differences: use: Greencracked brittlegill — culinary, cook fresh, salting, Death cap — not eaten; cap color: Greencracked brittlegill — green, olive, Death cap — green, olive, pale yellow; cap shape: Greencracked brittlegill — convex, flat, concave, Death cap — convex, flat. As for edibility: Greencracked brittlegill is edible, Death cap is deadly poisonous. The full table of characteristics is higher up on this page.
Which is more dangerous — Greencracked brittlegill or Death cap?
More dangerous: Death cap, which is deadly poisonous. Greencracked brittlegill is edible. If you have even the slightest doubt, don't pick the mushroom.
Is Death cap edible?
Death cap — deadly poisonous. It must not be picked or eaten.
When do Greencracked brittlegill and Death cap grow?
Greencracked brittlegill — June–September; Death cap — July–October.

Sources

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