Fairy ring champignon vs Fool's funnel: how to tell them apart

Both grow in grass rings. Fairy ring champignons have tough wiry stems that bend without snapping, a raised central bump and widely spaced gills. Fool's funnel is paler, has crowded gills running down the stem and no tough stem. Fool's funnel contains muscarine and is poisonous.

Side-by-side comparison

	Fairy ring champignon Marasmius oreades	Fool's funnel Clitocybe rivulosa
Safety status	Edible with caution	Poisonous
Cap	Buff to tan, 2–5 cm, with a raised central bump, drying paler	Whitish to pinkish-buff, 2–5 cm, flat to funnel-shaped, often with faint concentric rings
Underside	Widely spaced, pale cream gills not attached to the stem	Crowded white to cream gills running down the stem
Stem	Tough, wiry, slender, same colour as cap; can be bent without snapping	Short, whitish, no ring
Smell	Pleasant, almond-like	Mild, floury or sweetish
Spore print	White	White
Habitat	Lawns and pastures, usually in rings or arcs	Lawns, meadows and woodland edges, often in rings
Season	May – Nov	Aug – Nov

Photos: Alan Rockefeller, CC BY 4.0 · Andreas Kunze, CC BY-SA 3.0

Quick tests that separate them

1. Gills: widely spaced and not running down the stem (champignon) vs crowded and decurrent (fool's funnel).
2. Stem: tough, wiry and flexible (champignon) vs short and breaks easily (fool's funnel).
3. Cap: tan with a central bump (champignon) vs whitish and wavy or funnel-shaped (fool's funnel).
4. Spore print: both white, so a print does not separate them.

Key clues for each

Fairy ring champignon: A tough, flexible stem that does not snap like a twig, a raised central bump, widely spaced gills and growth in rings on grass.

Fool's funnel: Pale, whitish cap with faint concentric zones, crowded decurrent gills and no tough wiry stem. Do not pick fairy ring mushrooms unless you are a trained forager.

Frequently asked questions