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Goatcheese webcap or Cortinarius multiformis

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

The short answer

Goatcheese webcap and Cortinarius multiformis are similar species that can be mixed up while foraging. The main visible difference: cap color: Goatcheese webcap — violet, brown, grey, Cortinarius multiformis — yellow, orange, brown. The mushrooms also differ in the following features: smell, partner trees.

📊 Comparing characteristics

Comparison of characteristics: Goatcheese webcap and Cortinarius multiformis
Edibility class

Goatcheese webcap

Inedible

Cortinarius multiformis

Inedible
Season

Goatcheese webcap

SummerAutumn

Cortinarius multiformis

SummerAutumn
Use

Goatcheese webcap

Not eaten

Cortinarius multiformis

Not eaten
Size

Goatcheese webcap

Medium (5–15 cm)

Cortinarius multiformis

Medium (5–15 cm)
Cap color

Goatcheese webcap

VioletBrownGrey

Cortinarius multiformis

YellowOrangeBrown
Cap shape

Goatcheese webcap

Convex

Cortinarius multiformis

Convex
Cap surface

Goatcheese webcap

Smooth

Cortinarius multiformis

Smooth
Taste

Goatcheese webcap

Unknown

Cortinarius multiformis

Unknown
Smell

Goatcheese webcap

Chemical

Cortinarius multiformis

Odorless
Flesh color change

Goatcheese webcap

No change

Cortinarius multiformis

No change
Hymenophore

Goatcheese webcap

Gilled

Cortinarius multiformis

Gilled
Stem

Goatcheese webcap

Bulbous

Cortinarius multiformis

Bulbous
Ring (veil)

Goatcheese webcap

Ring remnants

Cortinarius multiformis

Ring remnants
Volva

Goatcheese webcap

No volva

Cortinarius multiformis

No volva
Substrate

Goatcheese webcap

Soil

Cortinarius multiformis

Soil
Nutrition type

Goatcheese webcap

Mycorrhizal

Cortinarius multiformis

Mycorrhizal
Partner trees

Goatcheese webcap

SprucePineBeech

Cortinarius multiformis

BeechOakHornbeamBirch

📅 Seasonality

Goatcheese webcap

Fruiting season

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

August – October

Cortinarius multiformis

Fruiting season

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

August – October

🔬 Morphology

Cap

Goatcheese webcap

The cap is 4-9 cm across, hemispherical to conical-convex in young mushrooms, becoming convex-flat with a noticeable low umbo over time. The color is grayish-lilac, lilac-brown, with a violet tint when young, fading to grayish-ochre with age. The surface is smooth, slightly slimy in wet weather. The cap margin is thin, with fine radial fibers.

Cortinarius multiformis

The cap is 5-10 cm across, hemispherical with an inrolled margin in young mushrooms, becoming convex to flat with a low umbo over time. The color is orange-yellow, honey-ochre, reddish-yellow, darker when young, fading to pale ochre with age. The surface is smooth, slightly slimy in wet weather. Older mushrooms often show fine radial cracks.

Hymenophore

Goatcheese webcap

The hymenophore is gilled — the gills are attached to the stem and moderately crowded. In young mushrooms they are lilac, mauve-gray, later turning rusty brown as the spores ripen. The spore print is rusty brown — a diagnostic feature of the genus Cortinarius. In young mushrooms the gills are covered by a cobwebby partial veil (the cortina) — a characteristic feature of the genus.

Cortinarius multiformis

The hymenophore is gilled — the gills are attached to the stem and moderately crowded. In young mushrooms they are pale cream to pale ochre, later turning rusty brown as the spores ripen. The spore print is rusty brown. In young mushrooms the gills are covered by a cobwebby partial veil (the cortina).

Stem

Goatcheese webcap

The stem is 5-10 cm tall, 1-2 cm thick, cylindrical, with a bulbous swelling at the base. The color is lilac to violet in the upper part, paler to whitish lower down. The surface has fine lilac fibers. On the stem, remnants of the cobwebby cortina — noticeable in young mushrooms, disappearing in older ones and leaving a thin band of rusty-brown spores on the stem.

Cortinarius multiformis

The stem is 5-9 cm tall, 1-2 cm thick, cylindrical, with a pronounced bulbous base (like an onion bulb). The color is whitish to pale ochre. On the stem you'll see remnants of the cobwebby cortina dusted with rusty-brown spores.

Flesh

Goatcheese webcap

The flesh is firm, white to pale lilac. When cut it does not change color. The smell is strong and sickly, camphor-like, with a note of raw potato or rancid cheese — its most characteristic diagnostic feature. The taste is mild, but given the smell it's not worth trying.

Cortinarius multiformis

The flesh is firm, white to pale cream. When cut it does not change color or turns slightly yellow. The smell is faint and neutral.

Smell

Goatcheese webcap

Strong sickly camphor-and-potato smell, with a note of rancid cheese or a damp cellar. You can catch it from a distance. It opens up when you rub the flesh. This is the most reliable diagnostic feature of the species — few other webcaps have such a pungent smell.

Cortinarius multiformis

Faint, neutral, mushroomy, with no distinctive notes.

📍 Habitats

Goatcheese webcap

Conifer forestMixed forest

Cortinarius multiformis

Deciduous forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Goatcheese webcap and Cortinarius multiformis be mixed up?
Yes, they look so similar that people often mix them up. The cap color, smell, partner trees help tell them apart.
How to tell Goatcheese webcap from Cortinarius multiformis?
The main differences: cap color: Goatcheese webcap — violet, brown, grey, Cortinarius multiformis — yellow, orange, brown; smell: Goatcheese webcap — chemical, Cortinarius multiformis — odorless; partner trees: Goatcheese webcap — spruce, pine, beech, Cortinarius multiformis — beech, oak, hornbeam, birch. The full table of characteristics is higher up on this page.
Is Cortinarius multiformis edible?
Cortinarius multiformis — inedible.
When do Goatcheese webcap and Cortinarius multiformis grow?
Goatcheese webcap — August–October; Cortinarius multiformis — August–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