Deadly Dapperling
Distribution
Europe (widespread but uncommon), Britain and Ireland, mainland Europe, temperate parts of western Asia, Mediterranean region, and parts of North Africa. Also recorded in the Middle East.
Habitat
Broadleaf and mixed woodlands, woodland edges, hedgerows, parks, gardens, and occasionally sand-dune grassland and orchards. Saprotrophic decomposer in humus-rich soils.
Season
Summer through late autumn (July to November in Europe).
Toxin Type
Amatoxins
Symptoms
Overview: Amatoxin poisoning syndrome. Because Lepiota species lack phallotoxins, GI symptoms may be delayed beyond 12 hours or patients may present only with hepatic failure. Phase 1 Latent Period: 8-24 hours post-ingestion with potentially no symptoms. Phase 2 Gastrointestinal: Intense abdominal pain, vomiting, and severe watery diarrhea with signs of dehydration (dry mucosal membranes, tachycardia). Phase 3 False Recovery: 48-72 hours: deceptive recovery period with rising liver enzymes, bilirubin, and development of coagulopathy. Phase 4 Hepatic Failure: 72-96 hours: severe liver damage, hepatic necrosis, hepatorenal syndrome, hepatic encephalopathy, bleeding, coma, and potential death within 3-7 days. Mechanism: Amatoxins inhibit RNA polymerase II.