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Greasy green brittlegill or Green brittlegill

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

The short answer

Greasy green brittlegill and Green brittlegill are similar species that can be mixed up while foraging. The main visible difference: use: Greasy green brittlegill — cook fresh, pickling, drying, Green brittlegill — cook fresh, pickling. The mushrooms also differ in the following features: cap color, flesh color change, partner trees.

📊 Comparing characteristics

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

Greasy green brittlegill

Edible

Green brittlegill

Edible
Season

Greasy green brittlegill

SummerAutumn

Green brittlegill

SummerAutumn
Use

Greasy green brittlegill

Cook freshPicklingDrying

Green brittlegill

Cook freshPickling
Size

Greasy green brittlegill

Medium (5–15 cm)

Green brittlegill

Medium (5–15 cm)
Cap color

Greasy green brittlegill

OliveBrown

Green brittlegill

Olive
Cap shape

Greasy green brittlegill

Depressed

Green brittlegill

Depressed
Cap surface

Greasy green brittlegill

Smooth

Green brittlegill

Smooth
Taste

Greasy green brittlegill

Mild

Green brittlegill

Mild
Smell

Greasy green brittlegill

Pleasant

Green brittlegill

Pleasant
Flesh color change

Greasy green brittlegill

Reddening

Green brittlegill

Yellowing
Hymenophore

Greasy green brittlegill

Gilled

Green brittlegill

Gilled
Stem

Greasy green brittlegill

Central

Green brittlegill

Central
Ring (veil)

Greasy green brittlegill

No ring

Green brittlegill

No ring
Volva

Greasy green brittlegill

No volva

Green brittlegill

No volva
Substrate

Greasy green brittlegill

Soil

Green brittlegill

Soil
Nutrition type

Greasy green brittlegill

Mycorrhizal

Green brittlegill

Mycorrhizal
Partner trees

Greasy green brittlegill

OakBeechHornbeamBirch

Green brittlegill

BirchPine

📅 Seasonality

Greasy green brittlegill

Fruiting season

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

July – October

Green brittlegill

Fruiting season

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

July – October

🔬 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.

Green brittlegill

Cap 5-10 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: gray-green, grass-green, olive-green, deeper toward dark green at the center, paler toward the margin and fading to grayish. In mature specimens the margin has fine radial grooves.

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.

Green brittlegill

Gilled hymenophore — the gills are attached or free from the stem, moderately crowded, thin, brittle. Color: white at first, cream with a pale ochre tinge with age. Spore print creamy white to pale ochre.

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.

Green brittlegill

Stem 4-8 cm tall, 1-2 cm thick, firm, cylindrical, hollow inside in old specimens. Color: white to creamy white, without noticeable spots. Surface smooth with fine lengthwise wrinkles. No ring, no volva — a key distinguishing feature from the death cap.

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).

Green brittlegill

Flesh firm, brittle, white, when cut does not change color or slowly turns yellow. Smell faint, pleasant, fruity-mushroomy, taste mild, with no bitterness or acridity (tongue test).

Smell

Greasy green brittlegill

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

Green brittlegill

Faint, pleasant, fruity-mushroomy, nothing sharp.

📍 Habitats

Greasy green brittlegill

Deciduous forestMixed forest

Green brittlegill

Deciduous forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Greasy green brittlegill and Green brittlegill be mixed up?
Yes, they look so similar that people often mix them up. The use, cap color, flesh color change help tell them apart.
How to tell Greasy green brittlegill from Green brittlegill?
The main differences: use: Greasy green brittlegill — cook fresh, pickling, drying, Green brittlegill — cook fresh, pickling; cap color: Greasy green brittlegill — olive, brown, Green brittlegill — olive; flesh color change: Greasy green brittlegill — reddening, Green brittlegill — yellowing. The full table of characteristics is higher up on this page.
Is Green brittlegill edible?
Green brittlegill — edible.
When do Greasy green brittlegill and Green brittlegill grow?
Greasy green brittlegill — July–October; Green brittlegill — July–October. 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