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Cortinarius multiformis or Red banded webcap

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

The short answer

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

📊 Comparing characteristics

Comparison of characteristics: Cortinarius multiformis and Red banded webcap
Edibility class

Cortinarius multiformis

Inedible

Red banded webcap

Inedible
Season

Cortinarius multiformis

SummerAutumn

Red banded webcap

SummerAutumn
Use

Cortinarius multiformis

Not eaten

Red banded webcap

Not eaten
Size

Cortinarius multiformis

Medium (5–15 cm)

Red banded webcap

Medium (5–15 cm)
Cap color

Cortinarius multiformis

YellowOrangeBrown

Red banded webcap

BrownRedOrange
Cap shape

Cortinarius multiformis

Convex

Red banded webcap

Convex
Cap surface

Cortinarius multiformis

Smooth

Red banded webcap

Fibrous
Taste

Cortinarius multiformis

Unknown

Red banded webcap

Unknown
Smell

Cortinarius multiformis

Odorless

Red banded webcap

Odorless
Flesh color change

Cortinarius multiformis

No change

Red banded webcap

No change
Hymenophore

Cortinarius multiformis

Gilled

Red banded webcap

Gilled
Stem

Cortinarius multiformis

Bulbous

Red banded webcap

Central
Ring (veil)

Cortinarius multiformis

Ring remnants

Red banded webcap

Ring remnants
Volva

Cortinarius multiformis

No volva

Red banded webcap

No volva
Substrate

Cortinarius multiformis

Soil

Red banded webcap

Soil
Nutrition type

Cortinarius multiformis

Mycorrhizal

Red banded webcap

Mycorrhizal
Partner trees

Cortinarius multiformis

BeechOakHornbeamBirch

Red banded webcap

Birch

📅 Seasonality

Cortinarius multiformis

Fruiting season

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

August – October

Red banded webcap

Fruiting season

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

August – October

🔬 Morphology

Cap

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.

Red banded webcap

Cap 5-12 cm across, hemispherical with an inrolled margin in young mushrooms, later becoming convex with a low umbo. Color red-brown, brick, russet-brown, with a pinkish tint when young. Surface velvety and dryish, with fine radial fibers. The cap margin is thin, with pinkish veil remnants in young mushrooms.

Hymenophore

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).

Red banded webcap

Gills — attached to the stem, moderately spaced. In young mushrooms light pinkish brown, becoming with age rusty brown, dark brick as the spore powder ripens. Spore print rusty brown. In young mushrooms the gills are covered by a cobweb-like partial veil (cortina).

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.

Red banded webcap

Stem 8-15 cm tall, 1-2.5 cm thick, cylindrical, long, thickened toward the base. Color brownish cream, with 2-4 distinct red-orange ring-like "bracelet" bands on the lower half — the diagnostic feature of the species. The surface has fine lengthwise fibers. Near the top there is a faint band left by the cobwebby cortina.

Flesh

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.

Red banded webcap

Flesh firm, brownish cream. When cut, it does not change color. Smell faint; in some populations with a hint of radish.

Smell

Cortinarius multiformis

Faint, neutral, mushroomy, with no distinctive notes.

Red banded webcap

Faint and neutral; in some populations with a subtle radish or resinous note.

📍 Habitats

Cortinarius multiformis

Deciduous forestMixed forest

Red banded webcap

Deciduous forestMixed forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Cortinarius multiformis and Red banded webcap be mixed up?
Yes, they look so similar that people often mix them up. The cap color, cap surface, stem help tell them apart.
How to tell Cortinarius multiformis from Red banded webcap?
The main differences: cap color: Cortinarius multiformis — yellow, orange, brown, Red banded webcap — brown, red, orange; cap surface: Cortinarius multiformis — smooth, Red banded webcap — fibrous; stem: Cortinarius multiformis — bulbous, Red banded webcap — central. The full table of characteristics is higher up on this page.
Is Red banded webcap edible?
Red banded webcap — inedible.
When do Cortinarius multiformis and Red banded webcap grow?
Cortinarius multiformis — August–October; Red banded webcap — 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