Deadly galerina vs fool's conecap: two small brown mushrooms with amatoxins

Quick answer

The deadly galerina grows in clusters on rotting wood and has a convex to flat cap; the fool's conecap grows scattered in lawns, mulch, wood chips and moss and has a small conical to bell-shaped cap with a pale, movable ring. Both contain amatoxins, drop a rusty brown spore print and have a ring.

Deadly lookalike

The deadly galerina and the fool's conecap can be fatal.

Like the fool's conecap, the deadly galerina (Galerina marginata) contains amatoxins, the same toxins as the death cap, at similar concentrations, according to the University of British Columbia's Mushrooms Up! guide. Amatoxins stop cells from making proteins by blocking the enzyme RNA polymerase II. The Bay Area Mycological Society records that symptoms usually begin 6 to 24 hours after eating, followed by an apparent recovery and then liver damage from about 72 hours. Cooking does not destroy amatoxins. The fool's conecap (Pholiotina rugosa) contains deadly amatoxins, according to MykoWeb's California Fungi, and the Bay Area Mycological Society lists it with the amatoxin species. Amatoxin symptoms usually begin 6 to 24 hours after eating with vomiting and diarrhea, followed by an apparent recovery and then liver damage from about 72 hours.

If someone has eaten a wild mushroom and feels unwell, or may have eaten one of these, call poison control now: 1-800-222-1222 in the US. Do not wait for symptoms.

Side by side

The tell for each

A single deadly galerina with an orange-brown cap and gills, leaning over gray slate fragments
Deadly
Deadly GalerinaGalerina marginata

The tellSmall honey-brown caps in clusters on rotting wood, with rusty brown gills, a thin ring on the stem, and a rusty brown spore print.

Pholiotina rugosa

Photo coming

Deadly
Fool's ConecapPholiotina rugosa

The tellTiny orange-brown conical cap on a thin stem with a small movable ring, in lawns, mulch and wood chips.

How they differ

Differences between the deadly galerina and the fool's conecap
FeatureDeadly GalerinaFool's Conecap
What it grows onDeadly GalerinaRotting logs and stumps.Fool's ConecapLawns, gardens, landscaping beds, wood chips and mossy ground.
GrowthDeadly GalerinaUsually in clusters.Fool's ConecapAlone or scattered.
Cap shapeDeadly GalerinaConvex, then flat or with a low central bump.Fool's ConecapConical to bell-shaped, often keeping a small central bump.
Cap sizeDeadly Galerina0.5 to 1.5 inches (1 to 4 cm).Fool's Conecap0.4 to 1 inch (1 to 2.5 cm).
RingDeadly GalerinaA thin ring or ring zone near the top.Fool's ConecapA small, pale, membranous ring in the upper half that can move and fall off.
Spore printDeadly GalerinaRusty brown.Fool's ConecapDull rusty brown.

FAQ

Common questions

What is the fool's conecap?

Pholiotina rugosa, formerly Conocybe filaris: a small, fragile, rusty-spored lawn and mulch mushroom with a ring. It contains amatoxins.

Do the deadly galerina and the fool's conecap have the same spore print?

Nearly: rusty brown for the galerina and dull rusty brown for the fool's conecap, and both have a ring. Growth and cap shape separate them: clusters on rotting wood with a convex to flat cap for the galerina, alone or scattered in lawns, mulch, wood chips and moss with a conical to bell-shaped cap for the fool's conecap.

Sources

Where these facts come from

  1. Galerina marginata

    MushroomExpert.com

  2. Pholiotina rugosa

    MushroomExpert.com

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