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Deadly fibrecap (Inosperma erubescens)
Jose Castro · CC BY 4.0
Deadly poisonous

Deadly fibrecap

Inosperma erubescens · Inocybaceae

The deadly fibrecap has a cap that turns from white to yellow-brown and is streaked and spotted with red.

FamilyInocybaceae
SeasonApr–Jul
Spore printBrown
Cap width8 cm
Records in TurkeyNone yet
CultivationWild only
StatusDeadly poisonous

The deadly fibrecap has a cap that turns from white to yellow-brown and is streaked and spotted with red. It contains a potentially fatal dose of muscarine; one death was recorded in England in 1937. In Israel it is confused with edible Tricholoma species. Formerly called Inocybe erubescens.

Also called: red-staining Inocybe, brick-red tear mushroom Turkish: Ölümcül lifli şapka Synonyms: Inocybe erubescens, Inocybe patouillardii

Deadly fibrecap

How to recognise it

Deadly fibrecap, part by part

No ring or volva Spore print: Brown Flesh yellowish at first. Never taste it.

Cap — Deadly fibrecap
CapUp to 8 cm; hemispherical then flat; white turning yellow or brown, with pink-white and red marks; irregular, split margin.
Gills — Deadly fibrecap
GillsReddish-pink, adnexed.
Stem — Deadly fibrecap
StemThin, dark red-pink, no ring.

When and where

Apr–Jul

  1. Jan
  2. Feb
  3. Mar
  4. Aprin season
  5. Mayin season
  6. Junin season
  7. Julin season
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

The deadly fibrecap fruits in spring and summer, appearing earlier than most mushrooms, which come up in autumn.

Where do deadly fibrecaps grow?

The deadly fibrecap grows mostly in beech woods on chalky soil, in small groups on leaf litter, and also turns up in other broadleaf woods.

In Turkey

The deadly fibrecap has been recorded from eastern Anatolia, but GBIF has no geo-referenced record of it from Turkey.

Our map has no observations of deadly fibrecaps from Turkey yet.

See on the map

In its habitat — Deadly fibrecap
In its habitat
In its habitat — Deadly fibrecap
In its habitat

Look-alikes

What is it mistaken for?

Edible species

Grey knight Tricholoma terreum

A grey, felty-capped species of the same habitat; this confusion has caused poisonings in Israel.

Deadly fibrecap
Deadly fibrecap
Liberty cap
Liberty cap
Psilocybin

Liberty cap Psilocybe semilanceata

Little brown grassland mushrooms; P. semilanceata is reported to be confused with muscarine-containing Inocybe species.

Toxins

The deadly fibrecap's active toxin is muscarine. Source

Frequently asked questions

Are deadly fibrecaps poisonous?

Yes, the deadly fibrecap is deadly poisonous and must never be eaten. Muscarine poisoning can be severe; hospitals treat it with antidotes such as atropine. Call 112 at once (Turkish poison centre: 114).

When is deadly fibrecap season in Turkey?

In our calendar, deadly fibrecap season runs Apr–Jul. The deadly fibrecap fruits in spring and summer, appearing earlier than most mushrooms, which come up in autumn.

Where do deadly fibrecaps grow?

The deadly fibrecap grows mostly in beech woods on chalky soil, in small groups on leaf litter, and also turns up in other broadleaf woods.

Where are deadly fibrecaps found in Turkey?

The deadly fibrecap has been recorded from eastern Anatolia, but GBIF has no geo-referenced record of it from Turkey.

What can the deadly fibrecap be confused with?

The deadly fibrecap can be confused with grey knight (Tricholoma terreum, edible species) and liberty cap (Psilocybe semilanceata, psilocybin). Look-alikes are compared on this page.

What is the deadly fibrecap called in Turkish?

In Turkish, the deadly fibrecap (Inosperma erubescens) is called Ölümcül lifli şapka.

Related species

All species → · Identify by photo →

Sources (3)
Photo credits (10)