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Ivory funnel (Clitocybe dealbata), photo
Photo
Poisonous

Ivory funnelClitocybe dealbata

Sweating mushroom

Clitocybe dealbata is a small, white, poisonous mushroom that grows in lawns, meadows and other grassy areas. Its resemblance to edible mushrooms and its muscarine content make identification important before collecting.[2][4][11]

Poisonous. Causes poisoning. Never eat a wild mushroom identified only from photos.

  • Season in Mexico
  • HabitatLawns and meadows
  • FamilyTricholomataceae

What happens if someone eats Ivory funnel?

Did someone eat a wild mushroom and feel sick? Call emergency services and bring a sample of the mushroom.

Toxins
Muscarine: Causes a cholinergic syndrome affecting involuntary functions, including salivation, respiratory secretions and heart rate. Clitocybe rivulosa is also implicated in muscarine poisoning.
When symptoms start
NAMA describes symptoms usually starting within 15-30 minutes of eating it. A clinical review gives an interval of 30 minutes to 2 hours for muscarine poisoning.
What to do
If you or someone else ate it, call a poison center or emergency services immediately. Do not wait for symptoms. Take a mushroom sample to help with identification. If the person has trouble breathing, collapses or loses consciousness, request an ambulance immediately.
[10][11][12][14]

How do you identify Ivory funnel?

Cap
Whitish, 2–4 cm across, flattened to depressed.[4]
Surface
White, with a frosted (pruinose) coating.[15]
Margin
The cap margin is rolled inward.[5]
Gills
Numerous, thin and crowded.[4]
Spore print
White.[4]

Can you eat Ivory funnel?

It is poisonous. Avoid eating it and seek expert identification when collecting similar mushrooms. Cooking leaves the risk of eating a poisonous mushroom.[12]

Where and when does Ivory funnel grow?

Grows in lawns, meadows and other grassy areas.[2][15]

A study of poisonous macrofungi documents it in Mexico; that publication omits localities for this species. It is also described as widespread in Europe and North America.[2]

See the mushroom map

About the name

Index Fungorum places Clitocybe dealbata in Clitocybaceae. Its relationship with Clitocybe rivulosa has received different treatments: some sources consider them synonyms, and NAMA groups them as Clitocybe rivulosa (dealbata). Both names require the same caution about muscarine.[1][3]

Fun facts

  • The name sweating mushroom refers to the sweating caused by poisoning.[3]
  • James Sowerby described it as Agaricus dealbatus in 1799.[1]

Frequently asked questions

Sources

  1. Index Fungorum - Name Record: Clitocybe dealbata
  2. Ivory Funnel (Clitocybe dealbata) · iNaturalist
  3. Clitocybe dealbata
  4. Don't Pick Poison: When Gathering Mushrooms for Food in Michigan
  5. Multiple Analyses Reveal Evidence for Three New Species of Collybia (Clitocybaceae, Basidiomycete) from China
  6. Introducción al estudio de los macromicetos tóxicos de México
  7. Marasmius oreades (MushroomExpert.Com)
  8. Clitopilus prunulus (MushroomExpert.Com)
  9. Mushroom Poisoning
  10. Mushroom Poisoning Syndromes
  11. Mushroom poisoning: An updated review
  12. Mushroom poisoning: Don't invite "the death angel" to dinner
  13. Seasonal Hazards - Oklahoma Center for Poison and Drug Information
  14. Get help for a poisoning
  15. West Galway Waxcap Survey 2010

Written with AI help from the cited sources. A second model checked every fact against those sources and removed what they did not support.

Image credits

Photos are under free licenses (CC0, CC BY or CC BY-SA).

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