Leaden entoloma Toxic?

Updated 2026-04-04| 4 min read| 3,604 found this helpful
Entoloma sinuatum
1

Symptom onset occurs 15 minutes to 4 hours after ingestion, with effects targeting the gastrointestinal tract

2

Severe fluid loss from vomiting and diarrhea can lead to rare secondary complications

3

Most cases resolve fully within 1 to 2 days with appropriate symptomatic treatment

FAQ

Is Leaden entoloma toxic to Humans?

15 minutes to 4 hour latency post-ingestion: vomiting, diarrhea, abdominal colic, potential complications from severe fluid loss; symptoms typically resolve in 1-2 days (Moderate)

Is Leaden entoloma toxic to Cats?

No specific confirmed toxicity data available; suspected to cause similar gastrointestinal irritation, vomiting and diarrhea as seen in humans if ingested (Low)

Is Leaden entoloma toxic to Dogs?

No specific confirmed toxicity data available; suspected to cause similar gastrointestinal irritation, vomiting and diarrhea as seen in humans if ingested (Low)

Is Leaden entoloma toxic to Horses?

No specific confirmed toxicity data available; suspected to cause similar gastrointestinal irritation, colic and diarrhea as seen in humans if ingested (Low)

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Toxicity Details

Humans
Moderate

15 minutes to 4 hour latency post-ingestion: vomiting, diarrhea, abdominal colic, potential complications from severe fluid loss; symptoms typically resolve in 1-2 days

Cats
Low

No specific confirmed toxicity data available; suspected to cause similar gastrointestinal irritation, vomiting and diarrhea as seen in humans if ingested

Dogs
Low

No specific confirmed toxicity data available; suspected to cause similar gastrointestinal irritation, vomiting and diarrhea as seen in humans if ingested

Horses
Low

No specific confirmed toxicity data available; suspected to cause similar gastrointestinal irritation, colic and diarrhea as seen in humans if ingested

Toxicity Snapshot

Toxic PartsAll parts of the mushroom are toxic if ingested
Exposure RouteIngestion is the only confirmed exposure route
Toxic CompoundsUnidentified gastrointestinal irritant compounds

First Aid & Prevention

First 30 Minutes

  • • Induce vomiting only if the exposed individual is fully conscious and ingestion occurred within the last 2 hours
  • • Provide small, regular sips of oral rehydration solution to prevent dehydration if vomiting is not severe
  • • Collect any remaining mushroom sample for formal identification to guide further care

Contact Vet Immediately

  • • Any confirmed or suspected ingestion of this mushroom by humans, pets or livestock
  • • Development of severe vomiting, diarrhea, lethargy or signs of dehydration
  • • Symptoms persist for longer than 24 hours without improvement

Prevention

  • • Never consume wild mushrooms unless positively identified as safe by a certified mushroom identification expert
  • • Restrict access of pets and livestock to areas where this species is known to grow
  • • Discard entire wild mushroom harvests if there is any doubt about the identity of any individual mushroom

Treatment & Prognosis

  • • Provide symptomatic supportive care including fluid and electrolyte replacement to correct losses from vomiting and diarrhea
  • • Administer prescribed anti-emetic and anti-diarrheal medications to control symptoms
  • • Monitor for rare secondary complications related to severe electrolyte imbalance
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Professional Toxicology

Scientific NameEntoloma sinuatum
AliasesAgaricus sinuatus Pers.、Entoloma lividum (Bull.) Quél.、Rhodophyllus lividus (Bull.) Quél.、Rhodophyllus sinuatus (Bull.) Quél.、Entoloma eulividum Noordel.、Riesenrötling (German)、Entolome livide (French)、Agarico livido (Italian)
Toxicity Grade
HumansModerate
CatsLow
DogsLow
HorsesLow
Target Organs
Gastrointestinal tractCardiovascular system (secondary to fluid and electrolyte loss)
Mechanism of Action

• Unidentified irritant compounds trigger inflammation of the gastrointestinal tract lining, leading to vomiting, diarrhea and abdominal pain

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle, sheep and goats: Suspected to cause gastrointestinal irritation and dehydration if ingested, no confirmed poisoning reports are documented
Small mammals (rabbits, guinea pigs): Expected to cause vomiting, diarrhea and severe dehydration if sufficient quantities are consumed
Confusion Risk

The following plants look similar and may be confused:

Field mushroom Agaricus campester
Edible species with similar cap shape and size; key difference: leaden entoloma has gills that turn reddish-brown with age, while field mushroom gills mature to dark brown/black
Clouded agaric Clitocybe nebularis
Edible when thoroughly cooked, with similar cap color and size; key difference: clouded agaric has white to pale cream gills and a distinct aniseed odor
St. George's mushroom Calocybe gambosa (syn. Tricholoma gambosum)
Edible spring-growing species with similar cap appearance; key difference: it has a strong floury odor, white gills, and only fruits in spring, while leaden entoloma fruits in late summer/autumn
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Related Toxic Plants

Spring entoloma
Entoloma vernum
Moderately toxic
Wood pinkgill
Entoloma rhodopolium
Highly toxic
Silky pinkgill
Entoloma sericeum
Moderately toxic

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Data Sources

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.

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