BOREAL & ATLANTIC EUROPE

Updated and reviewed — June 2026

Clinical Use Only. This reference is intended for healthcare providers, poison control specialists, and trained foragers. It is not a foraging identification guide. Always contact the relevant regional Poison Control Centre for real-time case management guidance. Treatment recommendations should be confirmed against current clinical guidelines.
Quick Reference — Key Boreal & Atlantic Europe Species
Common Name Scientific Name Tier Toxin Onset Primary Risk
Deadly Webcap Cortinarius rubellus Tier 1 Orellanine 3–14 days Acute interstitial nephritis, irreversible renal failure
Fool’s Webcap Cortinarius orellanus Tier 1 Orellanine 3–21 days Acute interstitial nephritis, progressive renal failure
Funeral Bell Galerina marginata Tier 1 Alpha-amanitin 6–24 hours Fulminant hepatic necrosis, coagulopathy, multiorgan failure
🔴 Tier 1 — Critical Lethal Systemic Toxin

Orellanine-Bearing & Amatoxin-Bearing Species

Cortinarius species carry orellanine with a catastrophically delayed onset of 3–21 days, often decoupling the ingestion event from clinical presentation. Galerina marginata carries alpha-amanitin identical to Death Cap. All three species are lethal without prompt specialist intervention.

Deadly Webcap

Cortinarius rubellus
🔴 CRITICAL / LETHAL Onset 3–14 days
Cortinarius rubellus — Deadly Webcap mushroom iNaturalist
Local Names
Spitzbuckliger Raukopf (German) · Cortinaire couleur de rocou (French)
Taxonomic Profile
Tier 1 (Lethal). Season: August–October. Elevation: 0–1200m.
Habitat & Distribution
Acidic soils in coniferous or mixed woodland, primarily associated with pine (Pinus) and birch (Betula). Widespread across Scandinavia, the Baltic States, Scotland, and Wales.
Morphological Markers
Cap 3–8cm, conical to sharply umbonate (pointed), tawny-orange to reddish-brown, dry/felted. Gills thick, distant, ochre to rusty-brown. Stem yellowish-orange, cylindrical, displaying pale yellow zig-zagging remnants of the cortina (veil).
Primary Lookalikes
Edible Chanterelles (Cantharellus cibarius) — which feature decurrent, ridge-like pseudogills rather than true, distant gills.
Toxin
Orellanine
Onset
3–14 days post-ingestion. This represents the most dangerous latency window in European mycology, often decoupling the exposure event from the onset of symptoms.

Fool’s Webcap

Cortinarius orellanus
🔴 CRITICAL / LETHAL Onset 3–21 days
Cortinarius orellanus — Fool's Webcap mushroom iNaturalist
Taxonomic Profile
Tier 1 (Lethal). Season: August–October.
Habitat & Distribution
Dry, acidic soils in deciduous forests, primarily associated with oak (Quercus) and beech (Fagus). Distributed through the UK, France, Germany, Poland, and southern Scandinavia.
Toxin
Orellanine
Morphological Markers
Cap 3–9cm, dry, velvety, rusty-orange to tawny-brown, broadly conical to convex. Gills widely spaced, rich rusty-cinnamon. Stem solid, cylindrical, tapering downward, colored similarly to cap, lacking a ring or distinct zig-zag bands.
Primary Lookalikes
Edible Cortinarius variants, Chanterelles (Cantharellus spp.)
Onset
3–21 days — the longest latency window of any known European macromycete toxin.

Orellanine Nephrotoxicity Toxidrome (Cortinarius rubellus / orellanus — combined)

Clinical Manifestation
Human Medical Stabilization Protocol

Funeral Bell

Galerina marginata
🔴 CRITICAL / LETHAL Onset 6–24 hours
Galerina marginata — Funeral Bell mushroom cluster on wood iNaturalist
Taxonomic Profile
Tier 1 (Lethal). Season: Year-round, peaking September–November.
Habitat & Distribution
Saprotrophic, growing in dense clusters directly on decaying wood, stumps, or buried logs of both coniferous and deciduous trees. Widespread and abundant across all of Boreal, Atlantic, and Continental Europe.
Toxin
Alpha-amanitin — same toxin as Death Cap
Onset
6–24 hours
Morphological Markers
Cap small (1–4cm), smooth, ochre-brown to honey-brown, hygrophanous (changing color as it dries). Gills pale yellowish-brown to rusty brown, crowded, adnate to subdecurrent. Stem brownish, fiber-streaked, possessing a small, fragile, membranous, pale annular ring that may become obscure with age.
Primary Lookalikes
Edible Honey Fungus (Armillaria mellea), wood-inhabiting Kuehneromyces mutabilis, and psychoactive Psilocybe cyanescens — which grows in similar woody or mulched substrates.

Amatoxin Hepatotoxicity Toxidrome (Galerina marginata)

Clinical Manifestation
Human Medical Stabilization Protocol

Section 4: Advanced Diagnostic Assays & Biomarker Detection Windows

Amatoxin Assays (Galerina marginata)

Orellanine Assays (Cortinarius rubellus / orellanus)

Section 5: Expanded Baltic Region Lookalikes Table

Lethal Target Species Baltic Regional Lookalike Key Morphological Distinctions
Cortinarius rubellus (Deadly Webcap) Cantharellus cibarius (Chanterelle – Edible) C. cibarius features shallow, fork-veined, decurrent pseudogills running down the stem, a distinct apricot aroma, and a smooth, solid, white-fleshed stem with no velar bands.
Cortinarius orellanus (Fool’s Webcap) Cortinarius capsumanus (Conifer Cortinarius – Inedible) C. capsumanus lacks the rich, dark, rusty-cinnamon gills of C. orellanus, has a silky, hygrophanous clay-tan cap, and grows strictly under deep Picea (spruce) litter.
Galerina marginata (Funeral Bell) Kuehneromyces mutabilis (Sheathed Woodtuft – Edible) K. mutabilis has a distinctly scaly lower stem below its ring, a strongly two-toned hygrophanous cap, and a sweet, pleasant wood aroma.
Galerina marginata (Funeral Bell) Psilocybe cyanescens (Wavy Cap – Psychoactive) P. cyanescens features a distinctly wavy cap margin when mature, a white stem, and exhibits an intense blue bruising reaction upon physical bruising or handling.

Section 6: Precise Fluid Resuscitation Protocols

Pediatric Human Fluid Management

Phase 1 — Fluid Resuscitation (Dehydration / Shock)
  • Indication: Signs of severe volume depletion or hypovolemic shock from early GI purging
  • Protocol: IV bolus of Isotonic Crystalloid (0.9% Normal Saline or Balanced Salt Solution) at 20mL/kg over 10–20 minutes. Repeat up to 3 times if necessary to restore perfusion, provided no signs of fluid overload or pulmonary edema.
Phase 2 — Maintenance and Toxin Clearance (Holliday-Segar 4-2-1 Rule)
  • ≤10 kg: 4mL/kg/hour
  • 11–20 kg: 40mL/hour + 2mL/kg/hour for each kg above 10 kg
  • >20 kg: 60mL/hour + 1mL/kg/hour for each kg above 20 kg
  • Amatoxin Enhancement: Scale final calculated maintenance rate by 1.5× to 2× baseline, maintaining target urine output >2mL/kg/hour. Track serum electrolytes and glucose continuously.

Pediatric / Small-Breed Veterinary Fluid Management

Phase 1 — Shock Bolus Therapy (Canine & Feline)
  • Canine (<10 kg): Isotonic crystalloids at 10–15mL/kg over 15 minutes. Re-evaluate perfusion markers.
  • Feline: Isotonic crystalloids at 5–10mL/kg slowly over 20 minutes. Avoid aggressive volume loading due to high risk of occult cardiomyopathy and rapid volume overload.
Phase 2 — Continuous Renal Flushing & Maintenance
  • Canine Maintenance Rate (mL/day) = 132 × (Body Weight in kg)0.75
  • Feline Maintenance Rate (mL/day) = 80 × (Body Weight in kg)0.75
  • Toxin Diuresis: Scale baseline maintenance rate to 2–3× the calculated volume to force continuous renal clearance
  • Monitoring: Strict urinary output — must match or exceed 2–4mL/kg/hour. If urine output drops below 1mL/kg/hour despite fluid loading, immediately decrease to maintenance levels to prevent pulmonary edema or cerebral swelling and check for anuric renal failure.

Regional Admissions & Dispatch Reference

Poison Control Centers (Human)

United Kingdom 0344 892 0111 (Healthcare Professionals) · 111 (Public)
Republic of Ireland +353 1 809 2566 (Healthcare Professionals) · +353 1 809 2166 (Public, 08:00–22:00)
Norway +47 22 59 13 00 (Giftlinjen)
Sweden +46 8 331 231 (Giftinformationscentralen)
Finland +358 9 471 977 (Myrkytystietokeskus)
Denmark +45 82 12 12 12 (Giftlinjen)
Pan-European Emergency Default 112
🟠 Tier 2 — Severe Immune-Mediated Hemolytic Toxin

Involutin-Bearing Species

Paxillus involutus carries involutin, which induces immune-mediated hemolytic anemia on repeat exposure. Single ingestion may be asymptomatic; the danger escalates dramatically with repeated consumption over seasons or years.

Brown Roll-Rim

Paxillus involutus
🟠 SEVERE INJURY / TOXIC Onset 30 min–3 hrs
Paxillus involutus — Brown Roll-Rim mushroom iNaturalist
Local Names
UK: Brown Roll-Rim · Germany: Kahler Krempling · Sweden: Rimsopp · Finland: Kangastatti · Poland: Krowiak podwinięty
Season & Elevation
August–November · 0–1500m
Habitat & Distribution
Ectomycorrhizal with birch (Betula), pine (Pinus), and spruce (Picea). Acidic soils in woodland, heathland edges, parkland. Extremely common across UK, Scandinavia, and Baltic States. Widespread across all of Boreal & Atlantic Europe — UK, Ireland, Scandinavia, Baltic States.
ID Features
Cap 5–15cm, convex with strongly inrolled margin when young, flattening to broadly depressed funnel-shaped. Ochre-brown to rusty-brown, slimy when wet. Gills pale yellow-cream, closely spaced, decurrent, bruising brown instantly on touch. Stem short, stocky, same color as cap.
Lookalikes
Edible Suillus species, young edible Rozites caperatus
Field Diagnostic
Gills bruise dark brown immediately on pressure — distinctive. Strong earthy-mushroom smell. Inrolled margin on young specimens.
Toxin
Involutin — induces type II immune-mediated hemolytic anemia (IMHA). Mechanism: repeat exposure sensitizes the immune system; subsequent ingestions trigger IgG antibody-mediated destruction of red blood cells. Single ingestion often asymptomatic; the danger increases dramatically with repeated consumption over seasons or years.
Mechanism of Action
The Paxillus antigen stimulates IgG/IgM antibody production. Upon re-exposure, immune complexes bind to erythrocyte membranes, triggering massive, acute complement-mediated intravascular hemolysis. Modern clinical evidence shows that aggressive forced fluid overloading or forced alkaline diuresis does not effectively protect the kidneys from hemoglobinuria — it significantly increases the risk of ARDS and volume-overload-induced heart failure due to damaged pulmonary capillaries.
Onset
30 minutes to 3 hours post-ingestion (acute GI). Hemolysis may develop over 6–24 hours.
Symptoms
Acute GI — nausea, vomiting, diarrhea. Then progressive hemolysis — sudden pallor, jaundice (yellow skin/gums), dark red-brown urine (hemoglobinuria), back/flank pain, rapid heart rate, shortness of breath. Severe cases progress to acute kidney injury and circulatory shock from RBC mass destruction.
Human Treatment Protocol:
  1. Immediate Stabilization & Decontamination
    • Airway: Secure immediately if respiratory distress or altered mental status
    • Activated Charcoal: 1 g/kg PO once within first hour if airway protective reflexes intact
  2. First-Line Immunological Interventions
    • High-Dose Corticosteroids — initiate immediately to halt antibody-mediated erythrocyte destruction
      • Adult: Methylprednisolone 1–2 mg/kg IV every 6 hours OR Dexamethasone 4–8 mg IV every 6 hours
      • Pediatric: Methylprednisolone 1–2 mg/kg IV split into two daily doses
    • Therapeutic Plasma Exchange (TPE) — mandatory first-line for progressive hemolysis or rapid hematocrit drop. Directly removes circulating immune complexes and free hemolytic antibodies.
  3. Fluid and Renal Management
    • Euvolemic fluid management — balanced crystalloids (Plasmalyte or Lactated Ringer’s), target urine output 1–2 mL/kg/hour. Do NOT hyper-hydrate or force diuresis.
    • Early CRRT — initiate at first sign of: AKI or rising creatinine, oliguria/anuria refractory to fluid titration, hyperkalemia, or metabolic acidosis. CRRT clears free hemoglobin and inflammatory cytokines without worsening volume overload.
🟡 Tier 3 — Acute CNS / Autonomic Toxin

Ibotenic Acid / Muscimol-Bearing Species

Amanita muscaria and Amanita pantherina carry ibotenic acid and muscimol. These are CNS-active compounds, not muscarine. Supportive care is the primary treatment. Do NOT administer Atropine.

Fly Agaric / Panthercap

Amanita muscaria / Amanita pantherina
🟡 HIGH CNS TOXICITY Onset 30 min–2 hrs
Amanita muscaria — Fly Agaric mushroom iNaturalist
Local Names
UK: Fly Agaric (A. muscaria), Panthercap (A. pantherina) · Germany: Fliegenpilz, Pantherpilz · Sweden: Röd flugsvamp · Finland: Punakärpässieni · Norway: Rød fluesopp · Baltic States: Mukhomor krasnyi (Russian)
Season & Elevation
August–November · 0–2000m
Habitat & Distribution
Ectomycorrhizal with birch (Betula) and pine (Pinus). Woodland edges, heathland, parks. A. muscaria — widespread across entire Boreal region. A. pantherina — prefers beech and oak woodland, more southern distribution. Ubiquitous across all of Boreal & Atlantic Europe.
ID Features (A. muscaria)
Cap 8–20cm, brilliant scarlet to orange-red with white wart patches (remnants of universal veil). White gills, white stem, white ring, white volva fragments at base.
ID Features (A. pantherina)
Cap 5–11cm, brown to grey-brown with white wart patches. White gills, white stem, white ring, double-ridged volva at base. More potent than A. muscaria.
Lookalikes
A. muscaria — edible Caesar’s Mushroom (Amanita caesarea) in southern range. A. pantherina — edible Amanita rubescens (Blusher) which stains pink/red when cut.
Toxin
Ibotenic acid and muscimol (pantherine-muscaria syndrome). Note: NOT the same mechanism as muscarine — ibotenic acid is a CNS excitatory agent (NMDA agonist); muscimol is a CNS depressant (GABA agonist). No muscarine present.
Onset
30 minutes to 2 hours (rapid)
Symptoms
CNS effects predominate — euphoria, confusion, delirium, visual disturbances, muscle spasms, myoclonus, ataxia. Autonomic: dry mouth (anticholinergic pattern, not muscarine). Severe cases: seizures, respiratory depression, coma. A. pantherina is significantly more toxic than A. muscaria.
⚠️ CRITICAL WARNING: DO NOT administer Atropine — these species do NOT cause muscarine toxidrome. Atropine will worsen the anticholinergic CNS syndrome and can be fatal.
Human Treatment Protocol:
  • Supportive care is the mainstay — no specific antidote
  • Activated Charcoal 1g/kg PO if presentation within 1–2 hours and airway protected
  • Benzodiazepines (Diazepam 5–10mg IV, titrate to effect) for seizure control and agitation
  • IV fluids for hydration maintenance
  • Monitor airway — respiratory depression possible in severe A. pantherina ingestion
  • ⚠️ CRITICAL WARNING: DO NOT administer Atropine — these species do NOT cause muscarine toxidrome. Atropine will worsen the anticholinergic CNS syndrome and can be fatal.
  • Physostigmine 0.5–2mg IV slowly may be considered for severe anticholinergic delirium — only under specialist guidance
  • Most cases resolve in 6–12 hours with supportive care

Field Survival & Decontamination Protocols

Standardized Spore Print Protocol

  1. Sever the fungal pileus (cap) cleanly from the stipe (stem) at the apex
  2. Place the pileus with the hymenium (gills) facing downward onto a split media substrate — half white, half black non-absorbent cardstock or a clean glass microscope slide
  3. Invert a clean glass beaker or bowl over the specimen to isolate from ambient airflow and trap natural humidity
  4. Allow to stand undisturbed for 2–6 hours
  5. Analyze resulting spore deposition:
    • Rusty-Brown to Cinnamon-Brown: Confirms Cortinarius species matrix
    • Ochre-Brown to Rusty-Brown: Confirms Galerina species matrix
    • White to Pale Cream: Characteristic of Amanita complex species

Cross-Contamination & Handling Rules

🌿 UNIVERSAL FORAGING RULE ZERO: Positive identification of any fungal specimen to absolute species certainty is mandatory before handling, processing, or ingestion. If a specimen cannot be identified with 100% taxonomic clarity, it must be treated as a Tier 1 lethal poison. There is no margin for error.