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Fool's Funnel

Fool's Funnel

Clitocybe rivulosa

Photo: Sigrid Jakob

Habitat

Grassland

This mushroom is primarily found on the ground in open, grassy areas such as lawns, pastures, parks, and urban environments. It typically grows in troops, clusters, arcs, or rings, and is sometimes found along path edges, roadsides, or in sand dunes. Preferred substrates include sandy soil and ground covered with short grass.

Photos

Appearance

Cap
1–7 cm wide; initially convex with an inrolled margin, becoming flattened and eventually depressed or funnel-shaped. The surface is dry, smooth, or finely powdery/silky, often featuring concentric rings, radial streaks, or grayish-tan "water spots." Color ranges from white to buff or light grayish-brown, frequently developing pinkish-brown blotches or cracks with age.
Stem
2–6 cm long and 4–20 mm thick; cylindrical or sometimes flattened, grooved, and twisted. It is colored similarly to the cap, often becoming darker grayish-brown or ocher where handled. The texture is tough and slightly silky or mealy, frequently with white woolly mycelium at the base.
Gills
Crowded and adnate to decurrent; initially white to whitish-gray, sometimes developing buff, cream, or greyish-pink tints, occasionally showing orange zones.
Flesh
Thin and whitish to pale grayish or buff; it can be firm-stringy or rubbery in texture.
Spore print
White to whitish.
Odor
Variable, described as faint and sweet, slightly mealy, or indistinct.

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Edibility

Not edible

This species is deadly poisonous and contains lethal concentrations of muscarine, which causes sweating, salivation, respiratory distress, and potential cardiac arrest. It is frequently confused with the edible Fairy Ring Champignon, but can be distinguished by its crowded gills, whereas the edible species has well-spaced gills. It also resembles the edible Miller mushroom, but lacks that species' pink spores and strong flour-like scent. Extreme caution is urged when foraging in grassy areas, as this mushroom often grows in close proximity to edible grassland species.

Misidentification can be fatal. Never eat a mushroom unless you're 100% sure. This information may be inaccurate. Always consult multiple sources.

Nutrient Source

Saprotrophic

It obtains nutrients by decomposing dead organic matter, such as fallen leaves and other plant material found in grassy areas.

Common Names

Danish
Bleg tragthat, Eng-tragthat
Dutch
Giftige weidetrechterzwam
English
Ivory Funnel, Fool's Funnel, Cracking Clitocybe, Sweating Mushroom
Finnish
myrkkymalikka
French
Clitocybe blanc-ivoire, Clitocybe blanchi, Clitocybe du bord des routes
German
Rinnigbereifter Trichterling
Norwegian Bokmål
lumsk traktsopp
Norwegian Nynorsk
lumsk trektsopp
Scottish Gaelic
clitocybean sgàineach, clitocybe sgàineach
Swedish
gifttrattskivling
Welsh
Twmffat/Twndish Rhychog

Synonyms

  • Agaricus dealbatus
  • Agaricus rivulosus
  • Clitocybe dealbataIvory Funnel, Sweating Mushroom
  • Omphalia dealbata
  • Omphalia rivulosa