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Amphinema byssoides or Amylocorticium cebennense

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

The short answer

Amphinema byssoides and Amylocorticium cebennense are similar species that can be mixed up while foraging. The main visible difference: season: Amphinema byssoides — spring, summer, autumn, winter, Amylocorticium cebennense — spring, summer, autumn. The mushrooms also differ in the following features: cap color, cap surface, substrate.

📊 Comparing characteristics

Comparison of characteristics: Amphinema byssoides and Amylocorticium cebennense
Edibility class

Amphinema byssoides

Inedible

Amylocorticium cebennense

Inedible
Season

Amphinema byssoides

SpringSummerAutumnWinter

Amylocorticium cebennense

SpringSummerAutumn
Use

Amphinema byssoides

Not eaten

Amylocorticium cebennense

Not eaten
Size

Amphinema byssoides

Very small (<3 cm)

Amylocorticium cebennense

Very small (<3 cm)
Cap color

Amphinema byssoides

WhiteYellowOrange

Amylocorticium cebennense

White
Cap shape

Amphinema byssoides

Irregular

Amylocorticium cebennense

Irregular
Cap surface

Amphinema byssoides

Velvety

Amylocorticium cebennense

Smooth
Taste

Amphinema byssoides

Unknown

Amylocorticium cebennense

Unknown
Smell

Amphinema byssoides

Odorless

Amylocorticium cebennense

Odorless
Flesh color change

Amphinema byssoides

No change

Amylocorticium cebennense

No change
Hymenophore

Amphinema byssoides

Smooth

Amylocorticium cebennense

Smooth
Stem

Amphinema byssoides

Absent

Amylocorticium cebennense

Absent
Ring (veil)

Amphinema byssoides

No ring

Amylocorticium cebennense

No ring
Volva

Amphinema byssoides

No volva

Amylocorticium cebennense

No volva
Substrate

Amphinema byssoides

Dead woodForest litter

Amylocorticium cebennense

Dead wood
Nutrition type

Amphinema byssoides

Saprotroph

Amylocorticium cebennense

Saprotroph
Partner trees

Amphinema byssoides

PineSpruce

Amylocorticium cebennense

SprucePine

📅 Seasonality

Amphinema byssoides

Fruiting season

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

January – December

Amylocorticium cebennense

Fruiting season

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

May – October

🔬 Morphology

Cap

Amphinema byssoides

The fruiting body is spread out, soft and irregular in shape. Its color changes from white to yellowish-brown and turns ocher with age. The surface looks like a cottony coating — hence the name.

Amylocorticium cebennense

There is no “cap” as such. The fruiting body is soft, spread out and completely fused to the substrate. White, may yellow over time. It looks like a thin film on the wood surface.

Hymenophore

Amphinema byssoides

The spore-bearing surface is smooth or has barely visible warts. Spores egg-shaped or ellipsoid, with a single oil droplet inside, colorless or yellowish, 3–5 × 2–3 µm.

Amylocorticium cebennense

Smooth spore-bearing surface. White, like the whole surface. Spores small (6–9 × 2–2.7 µm), cylindrical, slightly curved.

Stem

Amphinema byssoides

There is no stem. The body is entirely spread out and attached to the substrate over its whole surface.

Amylocorticium cebennense

There is no stem. The fruiting body is entirely spread out, attached to the substrate over its whole surface.

Flesh

Amphinema byssoides

flesh thin, cottony, loose. No color change when cut.

Amylocorticium cebennense

flesh thin, soft. No distinctive color changes.

Smell

Amphinema byssoides

No distinctive smell.

Amylocorticium cebennense

No distinctive smell.

📍 Habitats

Amphinema byssoides

Conifer forestMixed forest

Amylocorticium cebennense

Conifer forest

👀 Similar mushrooms — don't mix them up!

❓ Frequently asked questions

Can Amphinema byssoides and Amylocorticium cebennense be mixed up?
Yes, they look so similar that people often mix them up. The season, cap color, cap surface help tell them apart.
How to tell Amphinema byssoides from Amylocorticium cebennense?
The main differences: season: Amphinema byssoides — spring, summer, autumn, winter, Amylocorticium cebennense — spring, summer, autumn; cap color: Amphinema byssoides — white, yellow, orange, Amylocorticium cebennense — white; cap surface: Amphinema byssoides — velvety, Amylocorticium cebennense — smooth. The full table of characteristics is higher up on this page.
Is Amylocorticium cebennense edible?
Amylocorticium cebennense — inedible.
When do Amphinema byssoides and Amylocorticium cebennense grow?
Amphinema byssoides — January–December; Amylocorticium cebennense — May–October.

Sources

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