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Greasy green brittlegill or Greencracked brittlegill

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

The short answer

Greasy green brittlegill and Greencracked brittlegill are similar species that can be mixed up while foraging. The main visible difference: use: Greasy green brittlegill — cook fresh, pickling, drying, Greencracked brittlegill — culinary, cook fresh, salting. The mushrooms also differ in the following features: cap color, cap shape, cap surface.

📊 Comparing characteristics

Comparison of characteristics: Greasy green brittlegill and Greencracked brittlegill
Edibility class

Greasy green brittlegill

Edible

Greencracked brittlegill

Edible
Season

Greasy green brittlegill

SummerAutumn

Greencracked brittlegill

SummerAutumn
Use

Greasy green brittlegill

Cook freshPicklingDrying

Greencracked brittlegill

CulinaryCook freshSalting
Size

Greasy green brittlegill

Medium (5–15 cm)

Greencracked brittlegill

Medium (5–15 cm)
Cap color

Greasy green brittlegill

OliveBrown

Greencracked brittlegill

GreenOlive
Cap shape

Greasy green brittlegill

Depressed

Greencracked brittlegill

ConvexFlatConcave
Cap surface

Greasy green brittlegill

Smooth

Greencracked brittlegill

Dry
Taste

Greasy green brittlegill

Mild

Greencracked brittlegill

Mild
Smell

Greasy green brittlegill

Pleasant

Greencracked brittlegill

Pleasant, mushroomy
Flesh color change

Greasy green brittlegill

Reddening

Greencracked brittlegill

No change
Hymenophore

Greasy green brittlegill

Gilled

Greencracked brittlegill

Gilled
Stem

Greasy green brittlegill

Central

Greencracked brittlegill

CentralSolid
Ring (veil)

Greasy green brittlegill

No ring

Greencracked brittlegill

No ring
Volva

Greasy green brittlegill

No volva

Greencracked brittlegill

No volva
Substrate

Greasy green brittlegill

Soil

Greencracked brittlegill

Soil
Nutrition type

Greasy green brittlegill

Mycorrhizal

Greencracked brittlegill

Mycorrhizal
Partner trees

Greasy green brittlegill

OakBeechHornbeamBirch

Greencracked brittlegill

OakBirch

📅 Seasonality

Greasy green brittlegill

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

Greasy green brittlegill

Cap 5-12 cm across, when young convex with an inrolled margin, with age becoming flattened with a slightly depressed center. The cap skin is smooth, slimy in wet weather, dry and matte in dry weather, peels easily 2/3 of the way to the center. Color green-olive, olive-gray, gray-brown, deeper in the center to dark green. Mature caps have fine radial grooves at the margin.

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

Greasy green brittlegill

Gilled hymenophore — gills adnate or free from the stem, moderately crowded, thin, with characteristic forking near the stem — a diagnostic trait. Color pure white to creamy white. Spore print white.

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

Greasy green brittlegill

Stem 4-8 cm tall, 1.5-2.5 cm thick, firm, cylindrical, hollow in old specimens. Color white to cream, with faint gray-cream patches in old specimens. Surface smooth with fine lengthwise wrinkles. No ring, no volva.

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

Greasy green brittlegill

Flesh firm, brittle, white, turns faintly pink when damaged — a reaction typical of the species. Smell faint, pleasant, fruity-mushroomy, taste mild, sweetish and nutty, not bitter (tongue test).

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

Greasy green brittlegill

Faint, pleasant, fruity-mushroomy, neutral-sweetish.

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

Greasy green brittlegill

Deciduous forestMixed forest

Greencracked brittlegill

Deciduous forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Greasy green brittlegill and Greencracked brittlegill be mixed up?
Yes, they look so similar that people often mix them up. The use, cap color, cap shape help tell them apart.
How to tell Greasy green brittlegill from Greencracked brittlegill?
The main differences: use: Greasy green brittlegill — cook fresh, pickling, drying, Greencracked brittlegill — culinary, cook fresh, salting; cap color: Greasy green brittlegill — olive, brown, Greencracked brittlegill — green, olive; cap shape: Greasy green brittlegill — depressed, Greencracked brittlegill — convex, flat, concave. The full table of characteristics is higher up on this page.
Is Greencracked brittlegill edible?
Greencracked brittlegill — edible.
When do Greasy green brittlegill and Greencracked brittlegill grow?
Greasy green brittlegill — July–October; Greencracked brittlegill — June–September.

Sources

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