This blog is your complete guide to every mushroom in the game, organized with the GOTTA PICCEM mnemonic (actually in this case GOTTTAAA PPICCEM)
Click each entry to see the card, understand how the toxin works, what poisoning looks like, how it’s treated, where the mushroom is found, and how its toxicity shapes the scoring system.
There are thousands of mushroom species, but only about 15 distinct toxins (from ~100 species) cause human poisoning. This means the vast majority of mushrooms are safe—but the fact that a few are deadly makes it essential to recognize which are dangerous.
When patients show up after a mushroom meal gone wrong, we often don’t know what they ate—because, well, they already ate it. Sometimes nothing is left for identification, or what remains is too damaged to be useful. That’s why toxicologists rely on the syndrome—the pattern of symptoms and timing of onset—rather than the mushroom itself.
TIMING IS KEY TO RECOGNIZING MUSRHOOM POISONING
One of the most important diagnostic clues is timing. The mnemonic GOTTTAAA PICCEM helps organize mushroom poisonings by time to symptom onset. It’s not just fun—it’s clinically powerful.
GOTTTAAA = Late-onset toxicity
PICCEM = Early-onset toxicity
The single most important factor (especially in North America) is:
How quickly did GI symptoms start? (before or after ~5 hours)
What other symptoms are present?
General Rules
Early-onset GI symptoms (<5 hours, no other systemic features): usually self-limited and less dangerous.
Delayed-onset GI symptoms (>6 hours): much more concerning, often linked to mushrooms that cause serious organ damage (liver, kidneys, blood, nervous system).
The Rule Breakers
Of course, mushroom toxicology has its exceptions:
Rapid GI + Late Organ Toxicity: Some species cause both early GI upset and delayed organ failure
allenic norleucine–containing Amanitas (early GI upset and late kidney failure)
Paxillus (Early GI upset after becoming sensitized, then later immune-mediated hemolysis).
Rapid GI + Rapid Organ Toxicity: A few mushrooms cause fast GI symptoms and systemic toxicity.
Cholinergic muscarine-containing mushrooms (Some Inocybe and Clitocybe): severe cases have caused death
ibotenic acid/muscimol mushrooms (Amanita muscaria, Amanita pantherina). Both have caused deaths in severe cases.
Severe Illness Despite "Just GI": Even mushrooms thought of as “just GI irritants” can rarely kill. Morels, for example, have been linked to fatal GI syndromes in recent outbreaks.
Why Outcomes Vary
The same mushroom doesn’t always cause the same illness. Severity depends on many factors:
Amount of toxin in the mushroom (varies by species, environment, and even altitude—e.g., hydrazines in false morels differ by region).
Preparation method (heat-labile toxins may be destroyed by cooking or dehydration, thouhg many toxins are heat stable).
Amount consumed (“the dose makes the poison”).
Patient factors (genetic differences in metabolism, underlying health conditions, or organ vulnerability).
The Bottom Line
Recognizing mushroom syndromes is critical. The sooner we identify which pattern a patient fits, the sooner we can start the right treatment—whether it’s simple supportive care, or aggressive interventions like antidotes, dialysis, or organ transplant. Read on to see indepth reviews related to toxins, syndromes, treatment, and notes for each toxin class in the game.
Toxic Mechanism:
Gyromitrin is the primary toxin found in mushrooms of the Gyromitra genus—named from Latin for “folded turban,” a reference to their brain-like appearance. Gyromitrin is metabolized into monomethylhydrazine (MMH), a volatile and highly reactive compound also used in rocket fuel.
MMH inhibits pyridoxal phosphate (the active form of vitamin B6), which is essential for the synthesis of GABA (gamma-aminobutyric acid)—the brain’s primary inhibitory neurotransmitter (also the same neurotransmitter responsible for alcohols effect, its usually sedating). Inhibition of GABA production may lead to excitotoxicity, a form of neurotoxicity caused by excessive neuronal activity.
In addition to its effects on the nervous system, MMH causes oxidative damage to hepatocytes and erythrocytes (liver and red blood cells), which can result in liver injury and methemoglobinemia—a state in which hemoglobin is “rusted” (oxidized) and unable to effectively carry oxygen.
Finally, MMH may also exert genotoxic effects by damaging DNA. Chronic exposure has been linked in one French study to an increased incidence of amyotrophic lateral sclerosis (ALS, or Lou Gehrig’s disease), though this association remains controversial and unproven. The amount of gyromitrin found in any given mushroom can vary by where it growing in the world and even the altitude it is growing at.
Syndrome:
Symptoms are delayed—typically 6–12 hours after ingestion—as gyromitrin is gradually converted into MMH. The first signs are gastrointestinal: nausea, vomiting, abdominal pain, and diarrhea. Neurologic symptoms like tremor, agitation, and confusion may follow. Seizures are often described in textbooks but are rarely documented in real-world cases. Liver injury is more common. Some cases may also develop methemoglobinemia (rusted hemoglobin).
Treatment:
Care is supportive only and may include:
Pyridoxine (vitamin B6) administration (to restore GABA production in patients with neurotoxicity)
Benzodiazepines or barbiturates for seizures (though benzodiazepines may be less effective in GABA depleted states, as they need GABA to work)
Methylene blue (if clinically significant methemoglobinemia develops)
Where Found:
Gyromitra mushrooms are found throughout the Northern Hemisphere, including Europe, North America, and parts of Asia. They grow in spring near both hardwood and coniferous trees and are frequently mistaken for edible Morchella (true morels). Cooking or parboiling can reduce gyromitrin content but does not guarantee safety.
Toxicologist Notes:
One of the most hotly debated mushrooms. In some countries like Finland, Gyromitra is sold in markets and considered a delicacy (though must be sold with a warning)—while in others it’s banned outright. Toxicity likely varies due to regional differences in gyromitrin levels, species variation, and individual metabolic susceptibility. Some people tolerate it once, only to get sick with repeat exposures. A French study even linked Gyromitra consumption to ALS cases in Montchavin, though this remains unproven.
Game Notes:
–3 points if paired with morels (easy mix-up)
- 1 point if cooked (hard to ensure safety)
+7 points if you have the antidote (B6!)
Example Case:
A 42-year-old man presents to the emergency department with severe vomiting, abdominal pain, and confusion. Symptoms began roughly 10 hours after eating sautéed wild mushrooms he foraged with a friend, who remains asymptomatic. The mushrooms were identified as Gyromitra esculenta, which he believed were true morels. Labs reveal elevated liver enzymes (AST 386, ALT 412). His mental status fluctuates, and a mild tremor is noted. Pulse oximetry reads 93% despite normal respiratory exam; co-oximetry confirms 11% methemoglobinemia. He is treated with supportive care, including IV fluids, pyridoxine, and close monitoring. Seizures do not develop. He improves over 48 hours and is discharged with toxicology follow-up.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. False Morel 1
2. False Morel 2
3. False Morel 3
Toxin:
Orellanine is a bipyridine toxin found in several species of Cortinarius mushrooms. It causes oxidative stress by generating reactive oxygen species (ROS)—unstable molecules that damage cells. These ROS selectively injure the renal proximal tubules (the part of the kidney that filters and reabsorbs essential nutrients), leading to progressive interstitial nephritis (inflammation and scarring of kidney tissue) and potentially irreversible kidney failure.
Orellanine is heat-stable—it is not destroyed by cooking, drying, or freezing. Its long biologic half-life (how long it stays in the body) and tendency to accumulate in tissue lead to a very delayed onset of symptoms, often days to weeks after ingestion. This delay makes diagnosis difficult, and there is no known antidote.
Syndrome:
Symptoms begin 2 to 20 days after ingestion, depending on the dose and individual metabolism. Early signs are vague: nausea, fatigue, headache, intense thirst, or flu-like symptoms, which often resolve before more serious effects develop. As the kidneys sustain damage, patients develop decreased urine output (oliguria), flank pain, and elevated creatinine (a marker of kidney function).
By the time patients seek care, they may have acute kidney injury (AKI) or even anuria (no urine at all). In severe cases, electrolyte imbalances (like high potassium) and uremic symptoms (nausea, confusion, or itching from toxin buildup) occur. Death from kidney failure is possible without treatment.
Treatment:
No antidote exists. Care is supportive only and may include:
Early involvement of nephrology (kidney specialists)
Dialysis (a blood-filtering machine, often required if kidneys no longer working)
Kidney transplant in severe or irreversible cases
Where Found:
Cortinarius mushrooms grow in Europe, North America, and Asia, especially in forests with hardwood or coniferous trees. They are most common in late summer and fall and may be mistaken for edible mushrooms, especially by inexperienced foragers.
Notes:
Though these mushrooms were once thought to be only in Europe, Cortinarius orellanosus was recently discovered in Michigan when it caused poisoning. Over a decade later, a cortinarius rubellus poisoning occured in Canada (Quebc). While not published in true peer reviewed literature, the number of experts in consensus as detailed by the report, seems convincing. It is more common than we believed but still rare. It is most famous because the author of The Horse Whisperer, Nicholas Evans, was poisoned along with family members—and eventually required a kidney transplant. Diagnosis is hard: by the time kidney failure appears, patients may not remember eating mushrooms. And even if suspected, there is no hospital test for orellanine—it's a clinical diagnosis based on the timing and history. Many non toxic look alikes exist as well (C. caperatus, C. armillatus, C. violaceus).
Game Notes:
Delayed onset = more damage. The toxicity builds the earlier it is played and you get more points the more turns it is in play.
Example case:
A 29-year-old woman comes to the emergency department with fatigue, low urine output, and flank pain (pain near the lower back, where the kidneys are). Blood tests reveal a creatinine level of 8.6 mg/dL (a marker of kidney function that is severely elevated—normal is ~0.6–1.1), and high potassium levels, which can be dangerous to the heart.
She reports that about 10 days ago, she had mild gastrointestinal (GI) symptoms—nausea and stomach upset—after eating wild mushrooms. She felt better the next day and didn’t think much of it. However, her kidneys were silently being damaged.
She had recently foraged in northern Michigan, and a local mycologist (a mushroom expert) later identified leftover mushrooms as a species of Cortinarius, which can contain orellanine, a toxin known to cause delayed kidney failure.
Despite receiving IV fluids and other supportive care, her kidneys do not recover. She requires hemodialysis (a machine that filters her blood when her kidneys can’t), and she is evaluated for a kidney transplant due to permanent renal (kidney) damage.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. Cortinarius Rubellus
See Also:
C bruneofulvus, C brunneoincarnata, C callisteus (suspected), C cinnamomeus (suspected), C henrici, C limonius (suspected), C ranierensis, C sanguineus (suspected), C speciosissimus (synonym C rubellus, C splendens (suspected)
Toxic Mechanism:
The exact toxin in Tricholoma equestre remains unidentified, but repeated ingestion has been strongly linked to rhabdomyolysis—a dangerous condition where skeletal muscle fibers break down, releasing their contents into the bloodstream. Some researchers suspect a direct muscle toxin that damages muscle cell membranes.
Mushrooms with similar toxicity like Russula subnigricans (foun in Korea) contain a compound called cycloprop-2-ene carboxylic acid, which may act through a similar mechanism. In mouse studies, feeding powdered T. equestre reproduces the same muscle pathology seen in human cases.
Syndrome:
Symptoms typically appear 1–3 days after ingestion—often after large portions or multiple consecutive meals. Early signs include muscle pain, weakness (especially in the legs), and dark brown urine (called myoglobinuria, from muscle protein spilling into urine). Lab testing shows very high creatine kinase (CK) levels, a marker of muscle breakdown.
Kidneys may be damaged as they try to filter out large quantities of myoglobin, sometimes leading to acute kidney injury (AKI). In severe cases, heart muscle is damaged. Coupled with electrolyte imbalances (especially potassium) from cell breakdown this can lead to cardiac arrhythmias (irregular heartbeats), which may be fatal.
Treatment:
No antidote exists. Care is supportive only and may include:
Aggressive IV hydration (to protect the kidneys and dilute out toxins spilled from the muscles)
Correction of electrolyte abnormalities (to prevent dangerous imbalances)
Continuous monitoring of muscle break down products (CK), potassium, and kidney function (to detect early organ injury)
Cardiac monitoring (especially with significant electrolyte disturbances)
Dialysis in severe cases (if kidney failure or refractory electrolyte issues develop)
Where Found:
T. equestre is found across Europe, North America, Central Asia, and Japan. It is a mycorrhizal mushroom (grows in symbiosis with trees), typically associated with coniferous forests.
Notes:
Once considered a choice edible, it has since been banned in several countries following the initial outbreaks of severe poisonings reported in 2001. Some dispute if it was really the yellow knight or a genetically disparate look a like, but animal models of tricholoma equestre fed to mice are able to reproduce the toxicitiy seen in humans. Despite this, some foragers still report consuming it, and while some studies have show that genetically confirmed tricholoma equestre at "moderate" doses does not induce toxicity in healthy volunteers.: even if some specimens are safe, it’s impossible to know which ones, and toxicity appears cumulative. There are bold mushroom hunters and old mushroom hunters but no old bold mushroom hunters.
Game Notes:
This mushroom gets more dangerous with repeat exposures—players get no points for just one, but points go up drastically the more times it’s picked.
Example Case:
A 57-year-old man comes to the hospital with severe leg pain, fatigue, and cola-colored urine (a sign of muscle breakdown). He had gone mushroom hunting over a long weekend and ate large portions of sautéed wild mushrooms for three days in a row.
Blood tests show a creatine kinase (CK) of 35,000 U/L—a muscle enzyme that’s usually under 200 and becomes massively elevated when muscle cells are damaged. His creatinine is also high (a marker of kidney function), and he has hyperkalemia (excess potassium in the blood), which can cause dangerous heart rhythms.
He is diagnosed with rhabdomyolysis (muscle breakdown) and acute kidney injury. A sample of leftover mushrooms from his fridge is identified as Tricholoma equestre, a species now known to cause this type of toxicity.
He is treated with aggressive IV fluids to flush out the muscle proteins before they damage his kidneys, and his electrolytes are carefully corrected. He is closely monitored in the ICU (intensive care unit). Fortunately, his kidneys recover, and he does not require dialysis. He is discharged several days later with instructions to follow up with a nephrologist (kidney specialist).
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. New England Journal Case Series of Tricholoma equestre
Toxic Mechanism:
Trogia venenata contains three unusual amino acid toxins: 2R-amino-4S-hydroxy-5-hexynoic acid and 2R-amino-5-hexynoic acid (both lethal in animals at very low doses), plus γ-guanidinobutyric acid. In animal studies, these toxins cause profound hypoglycemia (dangerously low blood sugar — as low as 0.66 mmol/L in mice) within two hours of ingestion. Severe hypoglycemia can rapidly deprive the brain of energy (ATP), leading to neural cell death and, in humans, sudden collapse and death. The toxins’ chemical structure resembles hypoglycin from ackee fruit, which causes similar low blood sugar by blocking fat metabolism (beta-oxidation). Whether T. venenata toxins act exactly the same way is still being studied. Autopsies in human victims show microscopic heart muscle damage, inflammatory changes in the liver, lung fluid buildup, kidney injury, and other signs of multi-organ toxicity. Even mild cases often have elevated markers of muscle or heart stress (CK, myoglobin, AST) and sometimes low blood sugar.
Syndrome:
Known locally as Yunnan Sudden Unexplained Death (SUD), this is one of the most frightening mushroom poisonings because symptoms are often mild or absent until minutes before collapse. Most victims are healthy adults, often women, living in rural Yunnan. Clusters occur during the rainy season (June–August). The hallmark is sudden loss of consciousness during normal activity. Death may occur in less than 10 minutes or after brief coma, almost always within 24 hours. Some victims experience minor warning signs in the 3–5 days before collapse — dizziness, palpitations, chest tightness, fainting spells — but these do not progress like in other fatal mushroom syndromes. Other possible symptoms (in mild or preceding illness): abdominal pain, headache, vomiting, sore throat, convulsions, numbness in the hands/feet, shoulder or neck pain, fatigue.
Treatment:
No antidote exists. Prevention is the only reliable strategy and may include:
Avoiding consumption of unfamiliar mushrooms (especially T. venenata)
Community-level public health campaigns (teaching safe foraging practices)
Distribution of warnings in high-risk regions (e.g., posters, radio, village education)
Ongoing surveillance and reporting (to detect and respond to outbreaks quickly)
Since 2008, education campaigns in Yunnan cautioning villagers against eating unfamiliar mushrooms—particularly T. venenata—have been so effective that sudden unexplained death (SUD) reports dropped to zero in years.
Where Found:
Native to Yunnan Province, China, typically in villages at 1,800–2,400 meters elevation, sometimes up to 2,800 m. Grows in abundance on dead wood during the rainy season. Delicate, flower-like fruiting body, 5–10 cm wide, pinkish to dirty white to light brown.
Example Case:
On August 18, 2009, a 27-year-old man from Xiangyun County, Yunnan, collapsed suddenly while going about his normal day. He died within hours. Laboratory testing of his post-mortem blood revealed toxin 1 from T. venenata, confirmed by LC-MS/MS (a highly sensitive chemical test). His village had a history of SUD clusters, and the mushroom was found growing locally. This case, along with others, provided direct evidence linking T. venenata to the deadly syndrome.
Toxic Mechanism:
The main toxin is polyporic acid, linked to neurotoxicity (nervous system injury), hepatotoxicity (liver injury), and nephrotoxicity (kidney injury). It appears to cause harm by inhibiting dihydroorotate dehydrogenase (DHO-DH)—the fourth enzyme in the pyrimidine synthesis pathway (pyrimidines are essential building blocks of DNA and RNA). This enzyme is unique in that it is located in the mitochondria (the cell’s “power plants”), linking DNA building-block production to mitochondrial energy metabolism.Laboratory studies show neuronal cells are especially sensitive to polyporic acid—exhibiting toxicity at concentrations as low as 10⁻⁴ M—while glial cells and mixed cultures require roughly ten times that amount (10⁻³ M) to see effects. Certain other cell types, including kidney parenchymal cells and immune cell lines, also demonstrate heightened sensitivity.
A distinctive feature is purple urine—caused by excretion of polyporic acid metabolites—which can also be associated with metabolic acidosis (blood becoming too acidic).
Syndrome:
Symptoms usually start 6–12 hours after ingestion (delayed enough that the connection to the meal may be missed). Early effects include nausea, vomiting, and visual disturbances like blurred vision (diplopia) or visual hallucinations (seeing things that aren’t there). Lab testing often shows metabolic acidosis (low blood pH), and the purple or violet urine can persist for up to a week. Reported cases have shown mild kidney and liver injury (measured by abnormal lab values), though it’s unclear whether higher doses or certain health conditions could lead to more severe outcomes. Because only a handful of poisonings have been documented, the full range of toxicity is poorly characterized, but case reports suggest neurologic symptoms and may persist for up to 3 weeks!
Treatment:
No antidote exists. Care is supportive only and may include:
IV fluids (to protect the kidneys and help flush the toxin)
Electrolyte and acid-base monitoring (to detect imbalances early)
Liver and kidney function tests (to track organ health)
Observation in hospital
Where Found:
The Tender Nesting Polypore (Hapalopilus rutilans) grows on a variety of decaying hardwoods and has a circumboreal distribution across North Africa, Asia, Europe (e.g., France, Germany, as for North as Norway), and North America (Canada), it was recently reported in India in 2011.
Game notes
Nothing flashy — just a weird one-off mushroom to watch out for, +4 points if you snag it!
Example case:
A man and his adult daughter in southern France collected what they believed were edible wood fungi and sautéed them for dinner. About 12 hours later, both developed nausea, vomiting, and blurred vision (diplopia). At their doctor’s office, staff were startled to see deep purple urine in both patients (a hallmark sign of polyporic acid poisoning). Blood tests showed mild metabolic acidosis (pH 7.30), slightly elevated liver enzymes (a marker of liver injury), and borderline high creatinine (a marker of kidney function). Both were admitted for IV fluids (to protect the kidneys and help flush the toxin) and monitoring. Symptoms improved over several days, and lab values returned to normal. Leftover mushrooms were identified as H. rutilans.
Toxic Mechanism:
The main toxins are amatoxins, a group of cyclic peptides (α-, β-, γ-, and ε-amanitin) that inhibit RNA polymerase II—an enzyme essential for producing messenger RNA (mRNA, the “blueprint” for protein synthesis). Without mRNA, cells cannot make proteins, leading to cell death. After ingestion, amatoxins are absorbed from the GI tract (gastrointestinal tract) and transported to the liver via the portal circulation, where they concentrate in hepatocytes (liver cells). Phallotoxins—also present in several species such as Amanita phalloides and bisporigera—cause irritation of the gut (gastroenteritis) but are not absorbed into the bloodstream, so they do not cause systemic toxicity.
Syndrome:
Symptoms usually begin after a 5–12 hour delay (long enough that the mushroom meal may be forgotten). The first phase is profuse vomiting, diarrhea, and abdominal pain (GI irritation), which can cause severe dehydration and electrolyte disturbances. A deceptive “honeymoon phase” often follows, with temporary symptom improvement as amatoxins continue to damage the liver. Liver failure typically begins 24–36 hours after ingestion, with elevated liver enzymes (markers of hepatocyte injury), jaundice (yellowing of skin/eyes from bilirubin buildup), coagulopathy (impaired blood clotting), and hypoglycemia (low blood sugar). In severe cases, this progresses to multi-organ failure and death without liver transplantation.
Treatment:
No antidote exists, but several therapies may reduce toxin uptake or support recovery if given early:
Dialysis (extracting toxin from the blood with a machine) if the patient presents within 24 hours has been considered to try and remove toxin.
Silibinin (milk thistle extract) or penicillin G (block amatoxin entry into hepatocytes). Effectiveness declines once amatoxin has entered cells and caused significant damage.
Multi-dose activated charcoal (interrupts enterohepatic recirculation—recycling of toxins between liver and gut)
N-acetylcysteine (NAC) (antioxidant that may help liver recovery)
Severe cases may require liver transplantation.
Where Found:
Amatoxin-containing mushrooms occur in North America, Europe, and Asia, often near hardwood trees such as oak. They are found in deadly Amanita species (e.g., A. phalloides, A. bisporigera, A. virosa, A. ocreata) and in unrelated genera such as Galerina, Lepiota, and even some conocybe.
Notes:
Amatoxins cause more deaths than any other mushroom toxin in North America. Amatoxin refers to several “amanitin” cyclopeptides (α, β, γ, ε-amanitin), but also causes confusion. Not all Amanita species contain them, some are edible or have other toxins (e.g., A. caesarea = edible, A. muscaria = toxic but not amatoxin). Also found in non-Amanita species like Galerina and some Lepiota. These mushrooms are very much int he zeitgeist due to being used as a murder weapon in Australia.
Game Notes:
Delayed symptom onset means players score in the next round. Destroying angels are different, since they are typically all white mushrooms stylized art helps show them off! Collect more for more points but too many will tip you over the edge! We throw more antidotes at this mushroom than any other, so there are four different antidotes you can use to boost your score!
Example Case:
A 36-year-old woman presented with vomiting, diarrhea, and abdominal pain about 8 hours after eating foraged mushrooms. She improved the next morning, but 24 hours after ingestion developed jaundice (yellowing of skin/eyes) and confusion. Labs showed markedly elevated liver enzymes (AST 5,200 U/L, ALT 4,800 U/L), and hypoglycemia (low blood sugar). She was treated with IV fluids, high-dose penicillin, silibinin, multi-dose activated charcoal, and NAC, but her condition worsened. She developed an elevated INR (a sign of poor blood clotting from liver failure) and underwent urgent liver transplantation. She survived, the leftover mushrooms were identified as A. phalloides.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. Lepiota brunnoincarnata (Deadly Dapperingling)
2. Lepeota helveota (Browneyed Dapperling)
3. Lepeota subincarnata (Deadly Parasol)
4.Amanita Phalloides (Death Cap)
5. Not a case report but evidence of amatoxin in Conocybe Filaris (Fools Cone Cap)
6. Amanita verna (Spring Destroying Angel)
7. Amanita virosa (European Destroying Angel)
8. Amanita ocreata (Western Destroying Angel)
9. Amanita bisporegia (Eastern Destroying Angel)
10. Galerina marginata (Funeral Bell)
11. Galerina sulciceps (Greenhouse Galerina)
See Also:
Several more (e.g. Amanita exitalis,
Toxic Mechanism:
The main toxin in these mushrooms is allenic norleucine (L-2-amino-4,5-hexadienoic acid), an unusual amino acid linked to nephrotoxicity (kidney injury) in several Amanita species and hepatotoxicity (liver injury) in others.Allenic norleucine was once thought to be the primary toxin in A. smithiana, though it is theorized there is another toxin (A Smithiiana toxin) that is responsible .
Syndrome:
Symptoms usually start with gastrointestinal (GI) upset—nausea, vomiting, abdominal pain, sometimes diarrhea 20 minutes to 12 hours after ingestion—followed by delayed kidney failure (often several days later). Mild, transient liver injury may occur, especially in A. smithiana; that normalizes within a week.
Treatment:
No antidote exists. Care is supportive only and may include:
IV fluids (to maintain kidney perfusion and correct dehydration)
Electrolyte monitoring and correction (to address imbalances from GI losses and kidney injury)
Kidney replacement therapy (dialysis) for AKI, often needed for several weeks until renal function recovers
Where Found:
Amanita smithiana: Pacific coast of North America (British Columbia to California, also Idaho and New Mexico), in conifer forests.
Amanita abrupta: Widely distributed through North and South America
Amanita pseudoporphyria: Japan and China in broadleaf forests.
Amanita proxima: Mediterranean Basin (France, Spain, Italy, Turkey).
Notes:
These mushrooms are often mistaken for edible, highly prized species such as the pine mushroom (Tricholoma magnivelare) or Amanita ovoidea. The resemblance in size, color, and habitat increases the risk of misidentification. Kideny failure is generally reversible with supportive care—unlike orellanine-containing Cortinarius poisonings, which often cause permanent kidney damage. The delayed onset of kidney injury can obscure the connection to mushroom ingestion.
Game Notes:
There are select few of these mushrooms, collect more for more points. Because they cause delayed toxicity, if you get 3 of them you get a bonus the next round.
Example Case:
A 55-year-old man ate three raw wild mushrooms he thought were pine mushrooms (a prized edible species). Within 6 hours, he developed severe nausea and vomiting (GI irritation). Initial bloodwork showed only mild elevations in AST and ALT (liver enzymes that rise when the liver is irritated or injured), which returned to normal within a few days.
However, by day 4, his kidney function began to deteriorate—his creatinine (a marker of kidney function) rose sharply, peaking at 10.2 mg/dL on day 7 (normal is about 0.6–1.2 mg/dL). This level of kidney injury is called severe acute kidney injury (AKI) and meant his kidneys could no longer filter his blood effectively. He required hemodialysis (a machine to do the kidneys’ job) to survive.
A mushroom expert (mycologist) examined the remaining mushrooms and identified them as Amanita smithiana. After 39 days of dialysis, his kidneys recovered enough to stop treatment, and his creatinine returned to near-normal (1.4 mg/dL).
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. Amanita psuedoporphoryia (Hongos False Death Cap)
2. Amanita Smithiana (Smiths Amanita)
3. Amanita proxima (Proximal Bulb Amanita)
4. Amanita abrupta (Abrupt Bulb Amanita, not a case but confirmation of allenic norleucine)
See Also:
Amanita boudieri, Amanita echinocephala, Amanita gracilor, Amanita ovoidea
Toxic Mechanism:
The main toxins are acromelic acids (ACRO-A and ACRO-B), unusual amino acid derivatives found in Paralepistopis (previously Clitocybe) acromelalga (Japan/Korea) and Paralepistopis amoenolens (France/Morocco). ACRO-A is significantly more potent than ACRO-B. These toxins act as glutamate receptor agonists, primarily targeting kainate-type glutamate receptors on small sensory nerve endings in the skin. (In plain terms: they overstimulate nerve endings that sense pain and heat, leading to burning pain and redness in the extremities.)
The toxins also appear to damage tiny nerve fibers by reducing their blood supply (microvascular ischemia), leading to neuropathic pain. Other molecules in these mushrooms, such as clitidine (a toxic nucleoside), may play a secondary role, but the exact mechanism of human intoxication remains under study.
Syndrome:
This poisoning causes erythromelalgia (intense burning pain with redness and swelling of the hands and feet). Symptoms appear unusually late for mushroom poisoning—24 hours to several days after ingestion. The hallmark is severe paroxysmal pain (sudden bursts, often like electric shocks), especially at night, often leading to insomnia. Pain is worsened by warmth, movement, or pressure, but partially relieved by immersion in cold water. (Patients often sit with their feet in cold water for hours just to get relief.)
Other features include erythema (skin redness), edema (swelling), paresthesias (tingling, prickling, or numbness), and sometimes trophic skin injuries like sores between the toes. Fatigue, weakness, and sweating may also occur. Importantly, there are no gastrointestinal symptoms or liver/kidney damage, which distinguishes this from many other toxic mushrooms.
The painful phase can last for weeks. Recovery usually occurs within 1–5 months, but lingering numbness or tingling can persist for years.
Treatment:
No antidote exists. Care is supportive only and may include:
Cold water immersion provides temporary relief but is not practical long term.
Common painkillers like acetaminophen or weak opioids rarely help. Aspirin and morphine have been used with mixed success. The most promising therapy is intravenous nicotinic acid (niacin) at high doses, which has dramatically improved pain and redness in some cases. (Niacin widens blood vessels and reduces oxidative stress in nerves.)
Other medications (clonazepam, antidepressants, pregabalin) have been tried with inconsistent results. Some patients recover spontaneously, though often after weeks of significant suffering.
Where Found:
Paralepistopis acromelalga grows in Japan and South Korea, typically in bamboo groves in autumn. It resembles edible mushrooms such as Clitocybe gibba or Armillaria mellea, making misidentification easy.
Paralepistopis amoenolens has caused cases in southern France and was first described in Morocco. It grows in cedar forests and alpine valleys and resembles Lepista inversa and Clitocybe gibba.
Game Notes:
A rare mushroom, so very few in the deck, but the most promising treatment seems to be nicotinic acid, grab the antidote to double your points.
Example Case:
A 35-year-old mountain guide ate mushrooms later identified as Clitocybe amoenolens, mistaking them for edible species. About 24 hours later, he developed severe burning pain in his hands and feet, worsened by heat and movement but partly relieved by cold water. Pain crises occurred every 30 minutes, leading to insomnia, fatigue, swelling, and redness of his ankles. Usual painkillers were ineffective. He was treated with aspirin, clomipramine, and morphine, with partial relief. After six months he still had intermittent pain, and tingling sensations persisted for three years.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. Paralepistopis (previously Clitocybe) acromelalga
2. Paralepistopis (previously Clitocybe) acromelalga
3. Paralepistopis (previously Clitocybe) acromelalga
4. Paralepistopis (previously Clitocybe) amoenolens
Toxic Mechanism:
No specific chemical toxin has been identified, but Paxillus syndrome is thought to be caused by an immune-mediated reaction (the body’s immune system attacking its own red blood cells). The proposed process is:
An antigen (a substance that triggers an immune response) in the mushroom causes sensitization (the immune system “remembers” it) in some people after repeated consumption over months or years.
On subsequent exposure, antibodies (proteins that target the antigen) are released from immune cells and bind to the antigen.
These antigen–antibody complexes attach to erythrocytes (red blood cells), marking them for destruction (hemolysis).
This can trigger complement activation (a chain reaction of immune proteins), causing rapid intravascular hemolysis (red cells breaking apart in the bloodstream).
Syndrome:
A rare, life-threatening reaction to Paxillus involutus, usually after repeated exposure. Begins within 2–3 hours of eating (much faster than amatoxin poisoning) with severe abdominal/back pain, nausea, vomiting, and sometimes diarrhea. This is followed by hemolytic anaemia (immune destruction of red blood cells), causing jaundice (yellowing of skin/eyes from red blood cell products) and red/brown urine. Rapid progression to shock, lactic acidosis, and multi-organ failure is possible.
Treatment:
No antidote—treatment is supportive and aimed at stopping hemolysis, maintaining circulation, and supporting failing organs.
Anti-shock therapy (IV fluids, vasopressors like noradrenaline if needed)
Plasma exchange to remove antibodies from the blood—can be lifesaving in severe hemolysis
Kidney replacement therapy (dialysis) for acute kidney failure
Liver support (hepatotropic therapy) if liver is affected
Other measures: sodium bicarbonate for acidosis, hydrocortisone to dampen immune reaction, activated charcoal if ingestion was recent
Where Found:
Widely distributed across the Northern Hemisphere and introduced to South Africa, Australia, and South America. The majority of poisonings are reported from Europe or Turkey, however it it has been reported in parts of North America.
Game Notes:
This is another one where multiple meals seems to be the key to toxicity. One is worth zero but you get more points the more you collect!
Example Cases:
A 46-year-old man had eaten Paxillus involutus regularly without any problems. About 3 hours after a meal, he developed sudden, severe back pain. His condition quickly worsened, with signs of liver failure, septic shock (dangerously low blood pressure from infection-like inflammation), and disseminated intravascular coagulation—a life-threatening condition where the body forms abnormal blood clots and then bleeds uncontrollably. Despite intensive treatment, he died 4 days later from multi-organ failure.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. Paxillus involutus
Toxic Mechanism:
The main psychoactive compounds are psilocybin and psilocin. Psilocybin is rapidly converted in the body to psilocin, which acts as an agonist (activator) at serotonin 5-HT₂A receptors in the brain. This overstimulates serotonin pathways involved in perception, mood, and thought processing, producing hallucinations, altered sensory experiences, and changes in time perception. Activation of this pathway also appears to increase neuroplasticity (the brain’s ability to form new neuronal connections), which has made psilocybin a promising therapeutic target for mental health disorders such as depression and substance use. It is currently being tested in clinical trials by pharmaceutical companies for potential FDA approval. You can learn more on on going research here from the creator of this game.
Psilocin’s structure is similar to serotonin, allowing it to cross the blood–brain barrier and bind directly to serotonin receptors. Unlike many poisonous mushrooms, psilocybin-containing species rarely cause direct organ damage—most toxicity comes from central nervous system effects or behavioral risks due to impaired judgment. Though new synsroms are being discovered (see "wood lovers paralysis" below)
Syndrome:
Effects usually begin 20–60 minutes after ingestion, peak at 1–2 hours, and last up to 6–8 hours. Common effects include visual and auditory hallucinations, altered perception of time and space, euphoria, anxiety, and impaired coordination. Physical effects may include nausea, vomiting, dilated pupils, increased heart rate (tachycardia), elevated blood pressure, sweating, and tremors.
In rare cases—especially with very high doses or in individuals with underlying mental health conditions—severe agitation, panic, paranoia, or psychosis can occur. A theoretical risk of serotonin syndrome (dangerous excess serotonin activity) exists, but it has not been documented in the medical literature from psilocybin use. Hallucinogen persisting perception disorder (HPPD), a rare condition with ongoing visual disturbances, has been reported. Uniquely, one case of psilocybe cubensis associated acute kidney injury has also been reported.
From a toxicology perspective, most emergency visits are due to confusion or unsafe behavior rather than direct toxicity—such as walking into traffic or jumping from heights. “Set and setting” (mental state and environment) are crucial, as these are powerful psychoactive substances. With rising use in the United States, there is also theoretical concern for heart valve disorders with chronic use, similar to other drugs that stimulate serotonin pathways, though this remains unproven.
There is also a recent phenomeonom that has been discovered when these mushrooms are foraged from trees. "Wood Lovers Paralysis". It is progressive muscle weakness, sometimes leading to difficulty swallowing and breathing. It generally comes on within 4 hours and lasts several hours but is reversible. The mechanism behind this syndrome is unknown but primarily linked to Psilocybe azurescens, Psilocybe cyanescens, and Psilocybe subaeruginosa.
Treatment:
No antidote exists. Care is supportive:
Reassurance in a quiet, low-stimulation environment
Benzodiazepines (e.g., lorazepam) for severe anxiety or agitation
The use of serotonin antagonist drugs to "shut down the trip" has been discussed by researchers. An example of these drugs would be risperidone.
IV fluids if dehydrated from vomiting or sweating
Observation until mental status returns to baseline
Patients with dangerous behavior or psychosis may require temporary hospitalization for safety.
Where Found:
Psilocybin-containing mushrooms occur worldwide, with hundreds of species in the genera Psilocybe, Panaeolus, Gymnopilus, and Pluteus. Common species include Psilocybe cubensis, P. semilanceata (liberty cap), and P. cyanescens (wavy cap). They grow in grasslands, pastures, forest debris, and wood chips. Potency varies widely between species and even between individual mushrooms.
Game Notes:
One of my favorite game mechanics: whoever collects the most by the end of the game gets +10 points, while everyone else gets –5. Since psilocybin use is associated with increased gratitude (valuing what you have), you can expend two psilocybin cards already in play to double the value of your next card. Just don’t overdo it—or you might lose the race!
Example Cases:
A 22-year-old man ate several Psilocybe cubensis mushrooms at a music festival. About 45 minutes later, he experienced vivid visual hallucinations, euphoria, and impaired coordination. Two hours in, he became anxious and disoriented, wandering into a restricted area. Security escorted him to onsite medical staff, who noted dilated pupils, elevated heart rate (110 bpm), and mild dehydration. He was given oral fluids, moved to a quiet area, and reassured. Symptoms resolved after about 6 hours, and he was discharged without complications.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. Psilocybe cubensis kidney injury
2. Wood Lovers Paralysis
2. Analysis of psilocybin overdoses reported to poison centers
Toxic Mechanism:
The primary active compounds in Amanita muscaria (fly agaric) and Amanita pantherina (panther cap) are ibotenic acid (also called pantherine or agarine) and muscimol, concentrated in the red skin and yellow tissue beneath the cap. Ibotenic acid is structurally similar to glutamic acid (an excitatory neurotransmitter) and acts on glutamate receptors, stimulating the central nervous system (CNS). Muscimol is structurally similar to GABA (the brain’s primary inhibitory neurotransmitter) and acts as a potent agonist at GABA A receptors, producing sedative, hypnotic, and psychoactive effects.
Ibotenic acid is rapidly converted into muscimol in the body (and during drying or heating), which is believed to cause most of the symptoms. This conversion also reduces some toxicity while preserving psychoactive effects. Other compounds, such as muscarine (binds acetylcholine receptors, affecting heart rate, sweating, and blood vessels), are present in small but sometimes physiologically relevant amounts. Additional minor constituents include muscazone, choline, acetylcholine, betaine, tropane alkaloids (e.g., atropine, scopolamine), and bufotenine, though their clinical significance is unclear.
Syndrome:
Symptoms usually appear 20 minutes to 3 hours after ingestion and last 8–24 hours (though delirium, psychosis, and even coma, can sometimes last several days in severe cases) Effects often alternate between CNS stimulation (central nervous system excitation, such as agitation or hallucinations) and CNS depression (drowsiness, confusion, or coma).
CNS effects: Dizziness, confusion, disorientation, fatigue, euphoria (intense feelings of well-being), anxiety, vivid visual and auditory hallucinations, altered color perception, distortions of space and time, ataxia (impaired balance or coordination), tremors, and myoclonic jerks (sudden muscle twitches). Severe cases can progress to seizures, coma, or respiratory failure (breathing stops or becomes ineffective).
GI symptoms: Nausea, vomiting, diarrhea, and abdominal pain (less prominent than in many other toxic mushrooms).
Other physical signs: Flushed face, dry mouth, hyperhidrosis (excessive sweating), pupils that are either dilated (mydriasis) or constricted (miosis), variable heart rate (tachycardia = fast, bradycardia = slow), and blood pressure changes (high or low). Metabolic acidosis (excess acid in the blood) may occur in severe cases.
Treatment:
There is no specific antidote. Management is supportive (focused on treating symptoms and preventing complications) and may include:
Decontamination: Activated charcoal (binds toxins in the gut to limit absorption) is preferred; older methods included gastric lavage (“stomach pumping”) are reported in cases but almost never performed.
Supportive care: IV fluids to maintain hydration, correct electrolyte imbalances, and protect the kidneys—especially if seizures cause muscle breakdown (rhabdomyolysis) releasing harmful proteins into the blood.
Symptom control: Benzodiazepines or barbiturates for agitation, anxiety, or seizures.
Airway protection: Intubation (placing a breathing tube) and mechanical ventilation in cases of coma or severe breathing problems.
Where Found:
A. muscaria is common across the Northern Hemisphere, often under birch and coniferous trees, and has been introduced to South Africa, Australia, and South America. Found from July–November in Europe, with notable prevalence in Poland and the UK. Recreational use has led to increased regulation in some countries (e.g., Lithuania will classify it as a controlled substance in 2025). A. pantherina has a similarly wide distribution across Asia, Europe, North America, and parts of the Southern Hemisphere. There are variants of these mushrooms just about everywhere (note the "See Also" section below).
Game Notes:
While some may “forage” these for their reported psychoactive effects, it’s very easy to overdo it—real-life case reports frequently describe severe toxicity (seizures, coma, death). In-game, collect 1 for +7 points, but pick up more than that and you’ll start losing points, as too many land people in intensive care. With the wildly variable content of these psychoactive compounds, even one seems like a gamble in real life, good things its just a game!
Example Cases:
A 44-year-old man in Switzerland consumed approximately 0.5 kg of Amanita muscaria, mistaking it for the edible Amanita caesarea (the white surface patches had washed off in heavy rain). About 90 minutes later, he developed dizziness, confusion, and ataxia (loss of coordination), followed by drowsiness and eventual coma. On arrival to the hospital, he had a Glasgow Coma Scale of 5 (indicating deep unconsciousness) but stable vital signs. He was given IV fluids and close monitoring of airway and breathing. His coma persisted for 24 hours before gradually resolving. He was discharged on hospital day 2 with no lasting medical problems.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1.Amanita pantherina (Panther Cap)
2. Fatal Amanita muscaria (Fly Agaric)
3. Amanita muscaria (Fly Agaric)
4. Amanita pseudosychnopyramis
5. Amanita velatipes (Great Funnel Veil Amanita, anecdote unconfirmed)
6. Amanita pantherina (Panther Cap)
7. Amanita muscaria (Fly Agaric)
8. Amanita muscaria party (Fly Agaric)
9. Amanita muscaria coma (Fly agaric)
See Also:
An extensive list from a spirited reddit moderator of many psychoactive amanita sp around the world
Toxic Mechanism:
Muscarine is an alkaloid (naturally occurring plant/fungal compound) and a quaternary ammonium compound that stimulates the parasympathetic nervous system (the branch of the nervous system that promotes “rest and digest” functions). It acts as a muscarinic acetylcholine receptor (AChR) agonist—meaning it binds to and activates muscarinic AChRs. These are G-protein-coupled receptors found throughout the body, controlling functions such as heart rate, digestion, glandular secretions, and smooth muscle tone.
Activation of these receptors causes a cholinergic toxidrome (symptoms of acetylcholine overactivity), including excessive glandular secretions, slowed heart rate, and airway constriction. Muscarine is water-soluble and thermostable (not destroyed by cooking), so cooking does not make contaminated mushrooms safe.
Syndrome:
Symptoms usually begin 30 minutes to 4 hours after eating a muscarine-containing mushroom and generally resolve within 24 hours. Most cases are mild and self-limiting, but severe poisonings can be fatal. The illness is marked by a classic “cholinergic toxidrome,” with profuse sweating—often considered the key sign distinguishing muscarinic mushrooms from other gastrointestinal toxins—alongside nausea, vomiting, and diarrhea, which affect up to 90% of patients. Other hallmark features include hypersalivation (excessive drooling or frothing), lacrimation (excess tearing), bradycardia (slow heart rate), and respiratory effects such as bronchorrhea (excess fluid in the airways), bronchospasm (airway narrowing that causes wheezing or shortness of breath), and miosis (constricted pupils). Patients may also develop abdominal cramps, irritability, exhaustion, lethargy, muscle cramps, blurred vision, ptosis (drooping eyelids), cough, tachypnea (rapid breathing), rhonchi (coarse breath sounds from mucus), and hypotension (low blood pressure). Less commonly, altered mental status, confusion, pulmonary edema (fluid in the lungs), respiratory distress, numbness in the legs, and unexpected drowsiness may occur, despite muscarine’s inability to cross the blood–brain barrier. In some cases, mild elevations in liver enzymes or kidney injury can develop due to dehydration from persistent vomiting and diarrhea.
Treatment:
Atropine is an effective antidote for severe muscarine toxicity.
Mild cases: Supportive care only—oral or IV fluids for dehydration and electrolyte correction.
Moderate to severe cases:
Atropine (an anticholinergic drug) given IV to block muscarinic receptors.
Fluid resuscitation to correct dehydration and support blood pressure.
Continuous monitoring of heart rate, blood pressure, oxygenation, and breathing.
Decontamination: Activated charcoal may be given if early after ingestion; but given the profuse vomiting that may occur from muscarine, this could be high risk and should be reserved for those who would be deemed to tolerate it (airway protected and minimal nausea)
Most patients recover within hours with proper care; death is rare but documented.
Where Found:
Clinically significant muscarine levels occur in several unrelated mushroom groups:
Most common: Inocybe species and Clitocybe species
Examples: Clitocybe dealbata, C. illudens, Inocybe agardhii, I. rimosa, I. erubescens, and many others across North America, Europe, and tropical regions.
Also found in:
Amanita muscaria (first species where muscarine was identified)
Entoloma, Omphalotus, Mycena, Boletus, Hygrocybe, Lactarius, and Russula species
Many muscarinic mushrooms resemble edible varieties and may grow in urban lawns, parks, and wooded areas during rainy seasons.
Game Notes:
These mushrooms hit hard and fast, you get more points as you collect more in the toxin group, but the biggest amplifier is grabbing the antidote, atropine! +2 for each mushroom with atropine!
Example Cases:
An 88-year-old woman ate Clitocybe mushrooms from her yard. Within hours she developed diaphoresis, nausea, vomiting, diarrhea, altered mental status, and respiratory distress. She died within 7 hours; her husband, who ate less, had mild symptoms and survived. Autopsy confirmed Clitocybe ingestion.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1. Clitocybe rivulosa (Fools Funnel)
2. Clitocybe species
3. Inocybe species
4. Inocybe species
Toxic Mechanism
Alcohol intolerance after eating certain wild mushrooms is a recognized reaction. The best-understood example involves Coprinus atramentarius (Inky Cap mushroom), which contains coprine (a non-protein amino acid). Coprine is converted in the body into 1-amino-cyclopropanole, which inhibits acetaldehyde dehydrogenase—the enzyme that normally breaks down acetaldehyde (a toxic alcohol breakdown product). When this enzyme is blocked, acetaldehyde builds up, producing the classic flushing, headache, and rapid heartbeat seen in these reactions.
A nearly identical reaction has been reported after eating Lepiota aspera (the feckled dapperling), and the Suillellus boletus (lurid bolete) although the specific toxins are not known. The toxin appears heat stable (not destroyed by cooking) and non-volatile (doesn’t evaporate), since reactions occurred even after mushrooms were well sautéed or cooked for more than 15 minutes.
A similar effect occurs with disulfiram (Antabuse), a prescription drug used to discourage alcohol use by deliberately causing this reaction when alcohol is consumed. Thus its called a "disulfiram" reaction.
Syndrome
The reaction occurs when alcohol is consumed shortly after eating the mushroom. Symptoms may start within minutes of drinking alcohol and can last anywhere from 45 minutes to a few hours. In some cases, the body remains sensitive for up to 48 hours, so alcohol consumed later can re-trigger symptoms.
Typical features include facial flushing , throbbing headache, tachycardia (rapid heartbeat),shortness of breath (sometimes described like an asthma attack), facial rash,
chest tightness, dizziness, metallic taste in the mouth, Paresthesias (tingling in hands or feet) The mushroom meal itself is usually well tolerated until alcohol is consumed. Symptoms resolve without lasting effects once acetaldehyde levels drop.
Treatment
No antidote exists. Care is supportive and focused on comfort and monitoring. Avoid alcohol for at least 2 days after ingestion to prevent recurrence.
Observation and reassurance are usually all that’s needed.
Severe cases are rare, but sometimes require medication to support low blood pressure.
Where Found
Lepiota aspera cases have been reported in Germany (Bavaria and Lower Saxony, 2010) and Finland.
Coprinus atramentarius cases have been reported in Vermont, New York, and Mississippi but are likely all throughout the U.S.
Suillellus boletus: Widespread across Europe and parts of western Asia; less common but occasionally reported in North America (mostly as introductions or look-alikes in the Suillellus group).
Game notes: These don't do much up front, but when combined with alcohol they are a doozy. Collect with the Alcohol modifier for more points!
Example Case
A 47-year-old man ate seven sautéed mushrooms, believing they were Amanita rubescens. Four hours later, five minutes after drinking beer, he developed intense facial flushing, a rapid heartbeat (110 beats/min), and drowsiness. Symptoms resolved spontaneously within 90 minutes. Even small sips of beer over the next two days caused the same flushing reaction. The mushrooms were later identified as Lepiota aspera.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1.Suillellus luridus (Lurid Bolete)
2. Coprinus atramentarius (Ink Cap)
3.Lepiota aspera (Feckled Dapperling)
Toxic Mechanism:
"Emetic" or "Gastroenteritic" mushrooms are a label for hundreds of mushrooms that can cause isolated gastrointestinal toxicity (nausea, vomiting, diarrhea). They contain a variety of uknown or poorly characterized toxins that irritate the gastrointestinal tract. Some like the Jack O' Lantern or the false parasol we have identifed toxins (illudin and molybdyiphyllin respectively) and most we have no clear idea. The exact chemicals differ between species—some contain heat-stable proteins, others poorly defined sesquiterpenes or other small molecules—but the end result is the same: an unpleasant, often explosive combination of nausea, vomiting, abdominal cramps, and diarrhea. The toxins generally act locally rather than systemically, meaning that while they make you miserable, they usually don’t damage the liver, kidneys, or nervous system.
Syndrome:
Onset is usually rapid—anywhere from 30 minutes to 4 hours after ingestion. Symptoms include:
Nausea, vomiting, abdominal cramps, diarrhea, usually lasting less than 24 hours.
Sometimes other organ involvement like mild liver injury is present, depending on the specific mushroom.
Symptoms generally last less than 24 hours, but can cause significant dehydration in vulnerable populations (children, elderly, immunocompromised).
This syndrome is often confused with foodborne bacterial gastroenteritis, but the short incubation and mushroom consumption history are key clues.
Treatment:
Supportive care is the cornerstone—oral or IV fluids, electrolyte replacement, and antiemetics if needed.
No specific antidote exists.
Activated charcoal may be considered early if the patient presents soon after ingestion and symptoms aren’t severe enough to risk aspiration.
In severe dehydration, hospitalization for IV fluids is warranted.
Where Found:
Many mushroom species can cause gastroenteritis. Common culprits include:
Chlorophyllum molybdites (Green-spored parasol) — notorious in North America (the most common mushroom poisoning in North America), often mistaken for edible parasols.
Some Lactarius and Russula species.
Various Boletes with red pores (e.g., Boletus satanas).
Edible mushrooms contaminated by spoilage or insect damage.
They grow in lawns, meadows, open woods, and sometimes gardens—often exactly where an unsuspecting forager might find “dinner.”
Game Notes:
These things are everywhere, and they are a common cause of poisoning. This is the most common card in the game, collect 12 oz before anyone else to get the most points!
Example Cases:
In Florida, a family picked what they thought were edible parasols from their backyard. Within 90 minutes of dinner, all five developed vomiting and bloody diarrhea. Chlorophyllum molybdites was later identified from leftovers. All recovered after 12–18 hours of misery.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1.Omphallidus illudins (Jack O' Lantern)
2. Omphallidus illudins (Jack O' Lantern) 2
3.Chlorophyllum molybdites (False Parasol)
4. Scelroderma sp (Earth Ball)
5. Rubroboletus Satanas (Devils Bolete)
See Also:
Many many more, and any uncooked mushroom which can cause nausea/diarrhea
Toxic Mechanism
The specific toxins in morel mushrooms are not fully understood, but they cause both brain and GI toxicity. They do not contain gyromitrin or monomethyl hydrazine. Outbreak investigations have ruled out contamination by pesticides, heavy metals, common foodborne pathogens, or known mushroom toxins (based on testing of patient and food samples from outbreaks).
It has been theorized that cultivation is responsible for novel bacterial colonization leading to new toxicity. However there are cases of foraged morels causing poisoning. Separately, some cultivated edible mushrooms in China have been contaminated by Burkholderia gladioli pv. cocovenenans producing bongkrekic acid (a potent mitochondrial toxin); this has caused fatal GI illnesses in other species (e.g., Auricularia auricula, Flammulina velutipes, Lentinula edodes), but has not been confirmed as the cause in morel outbreaks.
Syndrome:
Morel ingestion can trigger two distinct clinical syndromes:
It is fairly well known to cause nausea and vomiting when eaten uncooked, thought his has only recently been codified in the medical literature. On several occasions consumption of morel mushrooms (Morchella spp.), particularly when undercooked, has been linked to a rapid-onset gastrointestinal syndrome so severe it can cause death. Symptoms typically begin within 15 minutes to 2.5 hours of ingestion and include profuse vomiting, diarrhea, abdominal pain, and nausea (acute GI syndrome). In severe cases, illness can escalate to hypovolemic shock (dangerously low blood volume/pressure from fluid loss), loss of consciousness, gastric bleeding, and ischemic or necrotic injury to the gastrointestinal tract (e.g., ischemic colitis, necrotic duodenitis/gastritis, mesenteric ischemia), with potential for cardiopulmonary arrest, acute kidney injury, and multi-organ failure. Unlike the classic “mild GI upset” occasionally seen with edible mushrooms, severe morel toxicity has a significantly higher fatality risk, with confirmed deaths first reported in 2023. Risk appears to increase with larger portions, and illness is more strongly associated with raw or undercooked morels than with thoroughly cooked specimens.
A separate presentation, known as the morel neurologic syndrome, can occur after consuming large meals of morels—cooked or uncooked—and is often reported when alcohol is consumed at the same time. This syndrome is characterized by dizziness, tremor, ataxia (impaired coordination), headache, blurred vision, confusion, and other nonspecific neurologic symptoms. While typically less immediately life-threatening than the severe GI form, it can still cause significant distress and functional impairment.
Treatment
No antidote—treatment is supportive and aimed at stopping supporting low blood pressure caused from diarrhea or gastric bleeding, maintaining circulation, and supporting failing organs.
Anti-shock therapy (IV fluids, blood transufsion for gastric bleeds, vasopressors like noradrenaline if needed)
Where Found
Morel mushrooms (genus Morchella) are found across temperate regions of North America, Europe, Asia, and parts of the Southern Hemisphere. Their exact distribution depends on the species, but here are the main habitats and patterns:
Global Range
North America – Widespread in the U.S. and Canada, especially in the Midwest, Great Lakes region, Pacific Northwest, and Appalachian Mountains.
Europe – Common in central and southern regions, especially France, Germany, and the Balkans.
Asia – Found in India, Pakistan, Turkey, China, and Japan.
Southern Hemisphere – Present in Australia and New Zealand, often in pine plantations.
🌱 Habitat Preferences
Forests & Woodlands – Often near hardwoods like ash, elm, poplar, and apple; also near conifers like pine or fir depending on species.
Disturbed Areas – Thrive in areas disturbed by logging, flooding, or fire ("burn morels" often appear 1–2 years after forest fires).
Moist, Well-Drained Soils – Particularly in spring after snowmelt or heavy rain.
📅 Seasonality (Northern Hemisphere)
Spring – Most species fruit from April to June, earlier in warmer climates and later at higher elevations or northern latitudes.
Post-Fire Flushes – In burned forests, fruiting can occur late spring to early summer depending on conditions.
Game Notes
This mushroom characteristically causes nausea and vomiting if eaten raw, so it is -3 if you don't have the pan or fire. If you get one, it is at least +2, but they really need to be thoroughly cooked so get both for the maximum points!
Example Case
A 52-year-old previously healthy man ate a dish containing commercial dried black morels that had been soaked and then added uncooked. Within 30 minutes he developed vomiting, diarrhea, and loss of consciousness. Despite treatment, he died 10 hours later. Autopsy showed gastric hemorrhage (bleeding in the stomach). He had eaten the largest portion of the meal.
Learn More:
Check out these links to read real case reports of poisoning from these mushrooms
1.Morel outbreak in Bozeman MT
2. Forager morel death
3. French poison center Morel poisonings
4.Swiss poison center Morel poisonings
5.Morel poisoning death in Spain (from aspiration of vomit)
See Also:
A Documentary miniseries on the Bozeman Morel Mushroom Poisoning outbreaks
There are some poisonous mushrooms not included in the game—such as the puffball, which can cause illness when its spores are inhaled, or the mysterious angel wing , which has been linked to outbreaks (in Japan) of altered mental status. And of course, new mushroom toxins are still being discovered. That said, this game is designed to be broadly comprehensive and covers the vast majority of toxic mushrooms that we in the medical community would worry about. Hopefully this makes you just a little more informed on your mushroom journey, happy hunting!