Amanita Muscaria
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''Amanita muscaria'', commonly known as the fly agaric or fly amanita, is a basidiomycete fungus of the genus ''
Amanita The genus ''Amanita'' contains about 600 species of agarics, including some of the most toxic known mushrooms found worldwide, as well as some well-regarded Edible mushroom, edible species (and many species of unknown edibility). The genus is re ...
''. It is a large white- gilled, white-spotted mushroom typically featuring a bright red cap covered with distinctive white warts. It is one of the most recognizable fungi in the world. ''A.muscaria'' exhibits complex genetic diversity that suggests it is a species complex rather than a single species. It is a widely distributed mushroom native to temperate and boreal forests of the
Northern Hemisphere The Northern Hemisphere is the half of Earth that is north of the equator. For other planets in the Solar System, north is defined by humans as being in the same celestial sphere, celestial hemisphere relative to the invariable plane of the Solar ...
, now also naturalized in the Southern Hemisphere, forming symbiotic relationships with various trees and spreading invasively in some regions. Its name derives from its traditional use as an
insecticide Insecticides are pesticides used to kill insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. The major use of insecticides is in agriculture, but they are also used in home and garden settings, i ...
. It can cause poisoning, especially in children and those seeking its
hallucinogen Hallucinogens, also known as psychedelics, entheogens, or historically as psychotomimetics, are a large and diverse class of psychoactive drugs that can produce altered states of consciousness characterized by major alterations in thought, mo ...
ic effects, due to psychoactive compounds like muscimol and the
ibotenic acid Ibotenic acid or (''S'')-2-amino-2-(3-hydroxyisoxazol-5-yl)acetic acid, also referred to as ibotenate, is a naturally occurring alpha-amino acid found in certain ''Amanita'' mushrooms, that primarily acts as a potent glutamate receptor agonist ...
; however, fatal poisonings are extremely rare. Boiling it reduces toxicity by removing water-soluble ibotenic acid into the discarded water. Drying converts ibotenic acid into muscimol, lowering toxicity but retaining psychoactive effects. Some cultures use it as food after preparation. Indigenous peoples of
Siberia Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states ...
used ''A.muscaria'' as an inebriant and entheogen. It has been controversially linked to
Santa Claus Santa Claus (also known as Saint Nicholas, Saint Nick, Father Christmas, Kris Kringle or Santa) is a legendary figure originating in Western Christian culture who is said to bring gifts during the late evening and overnight hours on Chris ...
, Viking
berserker In the Old Norse written corpus, berserkers () were Scandinavian warriors who were said to have fought in a trance-like fury, a characteristic which later gave rise to the modern English adjective ''wikt:berserk#Adjective, berserk'' . Berserkers ...
s,
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soma, and
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, though evidence is sparse and disputed. Its rise in the 2020s as a legal hallucinogen alternative has led to
Food and Drug Administration The United States Food and Drug Administration (FDA or US FDA) is a List of United States federal agencies, federal agency of the United States Department of Health and Human Services, Department of Health and Human Services. The FDA is respo ...
scrutiny. ''A.muscaria'' has appeared in art and
literature Literature is any collection of Writing, written work, but it is also used more narrowly for writings specifically considered to be an art form, especially novels, Play (theatre), plays, and poetry, poems. It includes both print and Electroni ...
since the
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, becoming iconic in
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s, children’s books, and media like the Super Mario games and Disney’s Fantasia. It has also influenced literary depictions of altered perception—most notably in '' Alice’s Adventures in Wonderland''—and has been referenced in novels by writers including
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,
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, and Alan Garner.


Taxonomy

The name of the
mushroom A mushroom or toadstool is the fleshy, spore-bearing Sporocarp (fungi), fruiting body of a fungus, typically produced above ground on soil or another food source. ''Toadstool'' generally refers to a poisonous mushroom. The standard for the n ...
in many European languages is thought to derive from its use as an
insecticide Insecticides are pesticides used to kill insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. The major use of insecticides is in agriculture, but they are also used in home and garden settings, i ...
when sprinkled in milk. This practice has been recorded from Germanic- and Slavic-speaking parts of Europe, as well as the Vosges region and pockets elsewhere in France, and Romania. Albertus Magnus was the first to record it in his work ''De vegetabilibus'' some time before 1256, commenting ''"vocatur fungus muscarum, eo quod in lacte pulverizatus interficit muscas"'' ("it is called the fly mushroom because it is powdered in milk to kill flies"). The 16th-century Flemish botanist Carolus Clusius traced the practice of sprinkling it into milk to
Frankfurt Frankfurt am Main () is the most populous city in the States of Germany, German state of Hesse. Its 773,068 inhabitants as of 2022 make it the List of cities in Germany by population, fifth-most populous city in Germany. Located in the forela ...
in Germany, while
Carl Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...
, the "father of taxonomy", reported it from
Småland Småland () is a historical Provinces of Sweden, province () in southern Sweden. Småland borders Blekinge, Scania, Halland, Västergötland, Östergötland and the island Öland in the Baltic Sea. The name ''Småland'' literally means "small la ...
in southern Sweden, where he had lived as a child. He described it in volume two of his ''
Species Plantarum ' (Latin for "The Species of Plants") is a book by Carl Linnaeus, originally published in 1753, which lists every species of plant known at the time, classified into genus, genera. It is the first work to consistently apply binomial nomenclature ...
'' in 1753, giving it the name ''Agaricus muscarius'', the
specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...
deriving from
Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
''musca'' meaning "fly". It gained its current name in 1783, when placed in the genus ''
Amanita The genus ''Amanita'' contains about 600 species of agarics, including some of the most toxic known mushrooms found worldwide, as well as some well-regarded Edible mushroom, edible species (and many species of unknown edibility). The genus is re ...
'' by
Jean-Baptiste Lamarck Jean-Baptiste Pierre Antoine de Monet, chevalier de Lamarck (1 August 1744 – 18 December 1829), often known simply as Lamarck (; ), was a French naturalist, biologist, academic, and soldier. He was an early proponent of the idea that biologi ...
, a name sanctioned in 1821 by the "father of mycology", Swedish naturalist
Elias Magnus Fries Elias Magnus Fries (15 August 1794 – 8 February 1878) was a Swedish mycologist and botanist. He is sometimes called the Mycology, "Linnaeus of Mycology". In his works he described and assigned botanical names to hundreds of fungus and li ...
. The starting date for all the mycota had been set by general agreement as January 1, 1821, the date of Fries's work, and so the full name was then ''Amanita muscaria'' (L.:Fr.)
Hook A hook is a tool consisting of a length of material, typically metal, that contains a portion that is curved/bent back or has a deeply grooved indentation, which serves to grab, latch or in any way attach itself onto another object. The hook's d ...
. The 1987 edition of the International Code of Botanical Nomenclature changed the rules on the starting date and primary work for names of fungi, and names can now be considered valid as far back as May 1, 1753, the date of publication of Linnaeus's work. Hence, Linnaeus and Lamarck are now taken as the namers of ''Amanita muscaria'' (L.) Lam.. The English mycologist John Ramsbottom reported that ''Amanita muscaria'' was used for getting rid of bugs in England and Sweden, and ''bug agaric'' was an old alternative name for the species. French mycologist Pierre Bulliard reported having tried without success to replicate its fly-killing properties in his work ' (1784), and proposed a new binomial name ''Agaricus pseudo-aurantiacus'' because of this. One compound isolated from the fungus is 1,3-diolein (1,3-di(cis-9-octadecenoyl)glycerol), which attracts insects. It has been hypothesised that the flies intentionally seek out the fly agaric for its intoxicating properties. An alternative derivation proposes that the term ''fly-'' refers not to insects as such but rather the delirium resulting from consumption of the fungus. This is based on the medieval belief that flies could enter a person's head and cause mental illness. Several regional names appear to be linked with this connotation, meaning the "mad" or "fool's" version of the highly regarded edible mushroom '' Amanita caesarea''. Hence there is ' "mad oriol" in Catalan, ''mujolo folo'' from
Toulouse Toulouse (, ; ; ) is a city in southern France, the Prefectures in France, prefecture of the Haute-Garonne department and of the Occitania (administrative region), Occitania region. The city is on the banks of the Garonne, River Garonne, from ...
, ' from the
Aveyron Aveyron (; ) is a Departments of France, department in the Regions of France, region of Occitania (administrative region), Occitania, Southern France. It was named after the river Aveyron (river), Aveyron. Its inhabitants are known as ''Aveyro ...
department in Southern France, ' from
Trentino Trentino (), officially the Autonomous Province of Trento (; ; ), is an Autonomous province#Italy, autonomous province of Italy in the Northern Italy, country's far north. Trentino and South Tyrol constitute the Regions of Italy, region of Tren ...
in Italy. A local dialect name in Fribourg in Switzerland is ''tsapi de diablhou'', which translates as "Devil's hat".


Classification

''Amanita muscaria'' is the
type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...
of the genus. By extension, it is also the type species of ''Amanita''
subgenus In biology, a subgenus ( subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between the ge ...
''Amanita'', as well as section ''Amanita'' within this subgenus. ''Amanita'' subgenus ''Amanita'' includes all ''Amanita'' with inamyloid spores. ''Amanita'' section ''Amanita'' includes the species with patchy universal veil remnants, including a volva that is reduced to a series of concentric rings, and the veil remnants on the
cap A cap is a flat headgear, usually with a visor. Caps have crowns that fit very close to the head. They made their first appearance as early as 3200 BC. The origin of the word "cap" comes from the Old French word "chapeau" which means "head co ...
to a series of patches or warts. Most species in this group also have a bulbous base. ''Amanita'' section ''Amanita'' consists of ''A. muscaria'' and its close relatives, including '' A. pantherina'' (the panther cap), '' A. gemmata'', '' A. farinosa'', and '' A. xanthocephala''. Modern fungal taxonomists have classified ''Amanita muscaria'' and its allies this way based on gross morphology and spore inamyloidy. Two recent
molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...
studies have confirmed this classification as natural.


Description

A large, conspicuous mushroom, ''A. muscaria'' is generally common and numerous where it grows, and is often found in groups with
basidiocarp In fungi, a basidiocarp, basidiome, or basidioma () is the sporocarp of a basidiomycete, the multicellular structure on which the spore-producing hymenium is borne. Basidiocarps are characteristic of the hymenomycetes; rusts and smuts do no ...
s in all stages of development. Fly agaric fruiting bodies emerge from the soil looking like white eggs. After emerging from the ground, the cap is covered with numerous small white to yellow pyramid-shaped warts. These are remnants of the universal veil, a membrane that encloses the entire mushroom when it is still very young. Dissecting the mushroom at this stage reveals a characteristic yellowish layer of skin under the veil, which helps identification. As the fungus grows, the red colour appears through the broken veil and the warts become less prominent; they do not change in size, but are reduced relative to the expanding skin area. The cap changes from globose to hemispherical, and finally to plate-like and flat in mature specimens. Fully grown, the bright red
cap A cap is a flat headgear, usually with a visor. Caps have crowns that fit very close to the head. They made their first appearance as early as 3200 BC. The origin of the word "cap" comes from the Old French word "chapeau" which means "head co ...
is usually around in diameter, although larger specimens have been found. The red colour may fade after rain and in older mushrooms. The free gills are white, as is the spore print. The oval spores measure 9–13 by 6.5–9  μm; they do not turn blue with the application of
iodine Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at , and boils to a vi ...
. The stipe is white, high by wide, and has the slightly brittle, fibrous texture typical of many large mushrooms. At the base is a bulb that bears universal veil remnants in the form of two to four distinct rings or ruffs. Between the basal universal veil remnants and gills are remnants of the
partial veil In mycology, a partial veil (also called an inner veil, to differentiate it from the "outer", or universal veil) is a temporary structure of tissue found on the fruiting bodies of some Basidiomycota, basidiomycete fungus, fungi, typically agarics. ...
(which covers the gills during development) in the form of a white ring. It can be quite wide and flaccid with age. There is generally no associated smell other than a mild earthiness. Although very distinctive in appearance, the fly agaric has been mistaken for other yellow to red mushroom species in the Americas, such as '' Armillaria'' cf. ''mellea'' and the edible '' A. basii''—a Mexican species similar to '' A. caesarea'' of Europe. Poison control centres in the U.S. and Canada have become aware that (Spanish for 'yellow') is a
common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often con ...
for the ''A. caesarea''-like species in Mexico. ''A. caesarea'' is distinguished by its entirely orange to red cap, which lacks the numerous white warty spots of the fly agaric (though these sometimes wash away during heavy rain). Furthermore, the stem, gills and ring of ''A. caesarea'' are bright yellow, not white. The volva is a distinct white bag, not broken into scales. In Australia, the introduced fly agaric may be confused with the native vermilion grisette ('' Amanita xanthocephala''), which grows in association with eucalypts. The latter species generally lacks the white warts of ''A. muscaria'' and bears no ring. Additionally, immature button forms resemble puffballs.


Controversy

''Amanita muscaria'' varies considerably in its morphology, and many authorities recognize several subspecies or varieties within the species. In ''The Agaricales in Modern Taxonomy'', German mycologist
Rolf Singer Rolf Singer (June 23, 1906 – January 18, 1994) was a German mycologist and Taxonomy (biology), taxonomist of gilled mushrooms (agarics). He wrote the book "The Agaricales in Modern Taxonomy (biology), Taxonomy". He fled to various countries d ...
listed three subspecies, though without description: ''A. muscaria'' ssp. ''muscaria'', ''A. muscaria'' ssp. ''americana'', and ''A. muscaria'' ssp. ''flavivolvata''. However, a 2006 molecular phylogenetic study of different regional populations of ''A. muscaria'' by mycologist József Geml and colleagues found three distinct
clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...
s within this species representing, roughly, Eurasian, Eurasian "subalpine", and North American populations. Specimens belonging to all three clades have been found in Alaska; this has led to the hypothesis that this was the centre of diversification for this species. The study also looked at four named varieties of the species: var. ''alba'', var. ''flavivolvata'', var. ''formosa'' (including var. ''guessowii''), and var. ''regalis'' from both areas. All four varieties were found within both the Eurasian and North American clades, evidence that these morphological forms are polymorphisms rather than distinct subspecies or varieties. Further molecular study by Geml and colleagues published in 2008 show that these three genetic groups, plus a fourth associated with oak–hickory–pine forest in the southeastern United States and two more on Santa Cruz Island in California, are delineated from each other enough genetically to be considered separate species. Thus ''A. muscaria'' as it stands currently is, evidently, a
species complex In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each oth ...
. The complex also includes at least three other closely related taxa that are currently regarded as species: '' A. breckonii'' is a buff-capped mushroom associated with conifers from the Pacific Northwest, and the brown-capped '' A. gioiosa'' and '' A. heterochroma'' from the Mediterranean Basin and from
Sardinia Sardinia ( ; ; ) is the Mediterranean islands#By area, second-largest island in the Mediterranean Sea, after Sicily, and one of the Regions of Italy, twenty regions of Italy. It is located west of the Italian Peninsula, north of Tunisia an ...
respectively. Both of these last two are found with ''
Eucalyptus ''Eucalyptus'' () is a genus of more than 700 species of flowering plants in the family Myrtaceae. Most species of ''Eucalyptus'' are trees, often Mallee (habit), mallees, and a few are shrubs. Along with several other genera in the tribe Eucalyp ...
'' and '' Cistus'' trees, and it is unclear whether they are native or introduced from Australia. ''Amanitaceae.org'' lists four varieties , but says that they will be segregated into their own taxa "in the near future". They are:


Distribution and habitat

''A. muscaria'' is a cosmopolitan mushroom, native to conifer and deciduous woodlands throughout the
temperate In geography, the temperate climates of Earth occur in the middle latitudes (approximately 23.5° to 66.5° N/S of the Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ran ...
and boreal regions of the Northern Hemisphere, including higher elevations of warmer latitudes in regions such as
Hindu Kush The Hindu Kush is an mountain range in Central Asia, Central and South Asia to the west of the Himalayas. It stretches from central and eastern Afghanistan into northwestern Pakistan and far southeastern Tajikistan. The range forms the wester ...
, the Mediterranean and also Central America. A recent molecular study proposes that it had an ancestral origin in the
Siberia Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states ...
n–
Beringia Beringia is defined today as the land and maritime area bounded on the west by the Lena River in Russia; on the east by the Mackenzie River in Canada; on the north by 70th parallel north, 72° north latitude in the Chukchi Sea; and on the south ...
n region in the Tertiary period, before radiating outwards across Asia, Europe and North America. The season for fruiting varies in different climates: fruiting occurs in summer and autumn across most of North America, but later in autumn and early winter on the Pacific coast. This species is often found in similar locations to ''
Boletus edulis ''Boletus edulis'' (English: cep, penny bun, porcino) is a basidiomycete fungus, and the type species of the genus ''Boletus''. It is prized as an edible mushroom. The fungus produces Basidiospore, spore-bearing basidiocarp, fruit bodies ...
'', and may appear in fairy rings. Conveyed with pine seedlings, it has been widely transported into the Southern Hemisphere, including Australia, New Zealand, South Africa and South America, where it can be found in the Brazilian states of Paraná, São Paulo, Minas Gerais, and
Rio Grande do Sul Rio Grande do Sul (, ; ; "Great River of the South") is a Federative units of Brazil, state in the South Region, Brazil, southern region of Brazil. It is the Federative units of Brazil#List, fifth-most populous state and the List of Brazilian s ...
. Ectomycorrhizal, ''A. muscaria'' forms symbiotic relationships with many trees, including
pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. ''World Flora Online'' accepts 134 species-rank taxa (119 species and 15 nothospecies) of pines as cu ...
, oak,
spruce A spruce is a tree of the genus ''Picea'' ( ), a genus of about 40 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal ecosystem, boreal (taiga) regions of the Northern hemisphere. ''Picea'' ...
,
fir Firs are evergreen coniferous trees belonging to the genus ''Abies'' () in the family Pinaceae. There are approximately 48–65 extant species, found on mountains throughout much of North and Central America, Eurasia, and North Africa. The genu ...
, birch, and cedar. Commonly seen under introduced trees, ''A. muscaria'' is the fungal equivalent of a
weed A weed is a plant considered undesirable in a particular situation, growing where it conflicts with human preferences, needs, or goals.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24. Pla ...
in
New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
,
Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta ...
and Victoria, forming new associations with southern beech (''
Nothofagus ''Nothofagus'', also known as the southern beeches, is a genus of 43 species of trees and shrubs native to the Southern Hemisphere, found across southern South America (Chile, Argentina) and east and southeast Australia, New Zealand, New Guin ...
''). The species is also invading a rainforest in Australia, where it may be displacing the native species. It appears to be spreading northwards, with recent reports placing it near Port Macquarie on the
New South Wales New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...
north coast. It was recorded under silver birch ('' Betula pendula'') in Manjimup, Western Australia in 2010. Although it has apparently not spread to
eucalypt Eucalypt is any woody plant with Capsule (fruit), capsule fruiting bodies belonging to one of seven closely related genera (of the tribe Eucalypteae) found across Australia: ''Eucalyptus'', ''Corymbia'', ''Angophora'', ''Stockwellia'', ''Allosyn ...
s in Australia, it has been recorded associating with them in Portugal. Commonly found throughout the great Southern region of western Australia, it is regularly found growing on '' Pinus radiata''.


Toxicity

''A. muscaria'' poisoning has occurred in young children and in people who ingested the mushrooms for a hallucinogenic experience, In: or who confused it with an edible species. ''A. muscaria'' contains several biologically active agents, at least one of which, muscimol, is known to be psychoactive.
Ibotenic acid Ibotenic acid or (''S'')-2-amino-2-(3-hydroxyisoxazol-5-yl)acetic acid, also referred to as ibotenate, is a naturally occurring alpha-amino acid found in certain ''Amanita'' mushrooms, that primarily acts as a potent glutamate receptor agonist ...
, a
neurotoxin Neurotoxins are toxins that are destructive to nervous tissue, nerve tissue (causing neurotoxicity). Neurotoxins are an extensive class of exogenous chemical neurological insult (medical), insultsSpencer 2000 that can adversely affect function ...
, serves as a prodrug to muscimol, with a small amount likely converting to muscimol after ingestion. An active dose in adults is approximately 6 mg muscimol or 30 to 60 mg ibotenic acid; this is typically about the amount found in one cap of ''A. muscaria''. The amount and ratio of chemical compounds per mushroom varies widely from region to region and season to season, which can further confuse the issue. Spring and summer mushrooms have been reported to contain up to 10 times more ibotenic acid and muscimol than autumn fruitings. Deaths from ''A. muscaria'' have been reported in historical journal articles and newspaper reports, but with modern medical treatment, fatal poisoning from ingesting this mushroom is extremely rare. Many books list ''A. muscaria'' as deadly, but according to David Arora, this is an error that implies the mushroom is far more toxic than it is. Furthermore, the North American Mycological Association has stated that there were "no reliably documented cases of death from toxins in these mushrooms in the past 100 years". The active constituents of ''A. muscaria'' are water-soluble; boiling and then discarding the cooking water at least partly detoxifies it. Drying may increase potency, as the process facilitates the conversion of ibotenic acid to the more potent muscimol. According to some sources, once detoxified, the mushroom becomes edible. Patrick Harding describes the Sami custom of processing the fly agaric through reindeer.


Pharmacology

Muscarine, discovered in 1869, was long thought to be the active hallucinogenic agent in ''A. muscaria''. Muscarine binds with
muscarinic acetylcholine receptor Muscarinic acetylcholine receptors (mAChRs) are acetylcholine receptors that form G protein-coupled receptor, G protein-coupled receptor complexes in the cell membranes of certain neurons and other Cell (biology), cells. They play several role ...
s leading to the excitation of neurons bearing these receptors. The levels of muscarine in ''A. muscaria'' are minute when compared with other poisonous fungi such as '' Inosperma erubescens'', the small white '' Clitocybe'' species '' C. dealbata'' and '' C. rivulosa''. The level of muscarine in ''A. muscaria'' is too low to play a role in the symptoms of poisoning. The major toxins involved in ''A. muscaria'' poisoning are muscimol(3-hydroxy-5-aminomethyl-1-isoxazole, an unsaturated cyclic hydroxamic acid) and the related amino acid
ibotenic acid Ibotenic acid or (''S'')-2-amino-2-(3-hydroxyisoxazol-5-yl)acetic acid, also referred to as ibotenate, is a naturally occurring alpha-amino acid found in certain ''Amanita'' mushrooms, that primarily acts as a potent glutamate receptor agonist ...
. Muscimol is the product of the decarboxylation (usually by drying) of ibotenic acid. Muscimol and ibotenic acid were discovered in the mid-20th century. Researchers in England, Japan, and Switzerland showed that the effects produced were due mainly to ibotenic acid and muscimol, not muscarine. These toxins are not distributed uniformly in the mushroom. Most are detected in the cap of the fruit, a moderate amount in the base, with the smallest amount in the stalk. Quite rapidly, between 20 and 90 minutes after ingestion, a substantial fraction of ibotenic acid is excreted unmetabolised in the urine of the consumer. Almost no muscimol is excreted when pure ibotenic acid is eaten, but muscimol is detectable in the urine after eating ''A. muscaria'', which contains both ibotenic acid and muscimol. Ibotenic acid and muscimol are structurally related to each other and to two major
neurotransmitter A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a Chemical synapse, synapse. The cell receiving the signal, or target cell, may be another neuron, but could also be a gland or muscle cell. Neurotra ...
s of the central nervous system:
glutamic acid Glutamic acid (symbol Glu or E; known as glutamate in its anionic form) is an α- amino acid that is used by almost all living beings in the biosynthesis of proteins. It is a non-essential nutrient for humans, meaning that the human body can ...
and GABA respectively. Ibotenic acid and muscimol act like these neurotransmitters, muscimol being a potent GABAA
agonist An agonist is a chemical that activates a Receptor (biochemistry), receptor to produce a biological response. Receptors are Cell (biology), cellular proteins whose activation causes the cell to modify what it is currently doing. In contrast, an R ...
, while ibotenic acid is an agonist of NMDA glutamate receptors and certain metabotropic glutamate receptors which are involved in the control of neuronal activity. It is these interactions which are thought to cause the psychoactive effects found in intoxication. Muscazone is another compound that has more recently been isolated from European specimens of the fly agaric. It is a product of the breakdown of ibotenic acid by
ultraviolet radiation Ultraviolet radiation, also known as simply UV, is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight and constitutes about 10% of t ...
. Muscazone is of minor pharmacological activity compared with the other agents. ''Amanita muscaria'' and related species are known as effective bioaccumulators of
vanadium Vanadium is a chemical element; it has Symbol (chemistry), symbol V and atomic number 23. It is a hard, silvery-grey, malleable transition metal. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an ...
; some species concentrate vanadium to levels of up to 400 times those typically found in plants. Vanadium is present in fruit-bodies as an
organometallic Organometallic chemistry is the study of organometallic compounds, chemical compounds containing at least one chemical bond between a carbon atom of an organic molecule and a metal, including alkali, alkaline earth, and transition metals, and so ...
compound called amavadine. The biological importance of the accumulation process is unknown.


Symptoms

Fly agarics are best known for the unpredictability of their effects. Depending on habitat and the amount ingested per body weight, effects can range from mild
nausea Nausea is a diffuse sensation of unease and discomfort, sometimes perceived as an urge to vomit. It can be a debilitating symptom if prolonged and has been described as placing discomfort on the chest, abdomen, or back of the throat. Over 30 d ...
and twitching to drowsiness, cholinergic crisis-like effects (low
blood pressure Blood pressure (BP) is the pressure of Circulatory system, circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term ...
,
sweat Perspiration, also known as sweat, is the fluid secreted by sweat glands in the skin of mammals. Two types of sweat glands can be found in humans: eccrine glands and Apocrine sweat gland, apocrine glands. The eccrine sweat glands are distribu ...
ing and
saliva Saliva (commonly referred as spit or drool) is an extracellular fluid produced and secreted by salivary glands in the mouth. In humans, saliva is around 99% water, plus electrolytes, mucus, white blood cells, epithelial cells (from which ...
tion), auditory and visual distortions, mood changes,
euphoria Euphoria ( ) is the experience (or affect) of pleasure or excitement and intense feelings of well-being and happiness. Certain natural rewards and social activities, such as aerobic exercise, laughter, listening to or making music and da ...
, relaxation,
ataxia Ataxia (from Greek α- negative prefix+ -τάξις rder= "lack of order") is a neurological sign consisting of lack of voluntary coordination of muscle movements that can include gait abnormality, speech changes, and abnormalities in e ...
, and loss of equilibrium (like with tetanus.) In cases of serious poisoning the mushroom causes delirium, somewhat similar in effect to
anticholinergic Anticholinergics (anticholinergic agents) are substances that block the action of the acetylcholine (ACh) neurotransmitter at synapses in the central nervous system, central and peripheral nervous system. These agents inhibit the parasympatheti ...
poisoning (such as that caused by '' Datura stramonium''), characterised by bouts of marked agitation with confusion, hallucinations, and irritability followed by periods of
central nervous system The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain, spinal cord and retina. The CNS is so named because the brain integrates the received information and coordinates and influences the activity o ...
depression.
Seizures A seizure is a sudden, brief disruption of brain activity caused by abnormal, excessive, or synchronous neuronal firing. Depending on the regions of the brain involved, seizures can lead to changes in movement, sensation, behavior, awareness, o ...
and
coma A coma is a deep state of prolonged unconsciousness in which a person cannot be awakened, fails to Nociception, respond normally to Pain, painful stimuli, light, or sound, lacks a normal Circadian rhythm, sleep-wake cycle and does not initiate ...
may also occur in severe poisonings. Symptoms typically appear after around 30 to 90 minutes and peak within three hours, but certain effects can last for several days. In the majority of cases recovery is complete within 12 to 24 hours. The effect is highly variable between individuals, with similar doses potentially causing quite different reactions. Some people suffering intoxication have exhibited headaches up to ten hours afterwards.
Retrograde amnesia In neurology, retrograde amnesia (RA) is the inability to access memories or information from before an injury or disease occurred. RA differs from a similar condition called anterograde amnesia (AA), which is the inability to form new memories f ...
and
somnolence Somnolence (alternatively sleepiness or drowsiness) is a state of strong desire for sleep, or sleeping for unusually long periods (compare hypersomnia). It has distinct meanings and causes. It can refer to the usual state preceding falling aslee ...
can result following recovery.


Treatment

Medical attention should be sought in cases of suspected poisoning. If the delay between ingestion and treatment is less than four hours, activated charcoal is given. Gastric lavage can be considered if the patient presents within one hour of ingestion. Inducing vomiting with
syrup of ipecac Syrup of ipecac (), or simply ipecac, is a drug that was once widely used as an expectorant (in low doses) and a rapid-acting emetic (in higher doses). It is obtained from the dried rhizome and roots of the ipecacuanha plant ('' Carapichea ipe ...
is no longer recommended in any poisoning situation. There is no antidote, and supportive care is the mainstay of further treatment for intoxication. Though sometimes referred to as a
deliriant Deliriants are a subclass of hallucinogen. The term was coined in the early 1980s to distinguish these drugs from psychedelics such as LSD and dissociatives such as ketamine, due to their primary effect of causing delirium, as opposed to th ...
and while muscarine was first isolated from ''A. muscaria'' and as such is its namesake, muscimol does not have action, either as an
agonist An agonist is a chemical that activates a Receptor (biochemistry), receptor to produce a biological response. Receptors are Cell (biology), cellular proteins whose activation causes the cell to modify what it is currently doing. In contrast, an R ...
or
antagonist An antagonist is a character in a story who is presented as the main enemy or rival of the protagonist and is often depicted as a villain.muscarinic acetylcholine receptor Muscarinic acetylcholine receptors (mAChRs) are acetylcholine receptors that form G protein-coupled receptor, G protein-coupled receptor complexes in the cell membranes of certain neurons and other Cell (biology), cells. They play several role ...
site, and therefore
atropine Atropine is a tropane alkaloid and anticholinergic medication used to treat certain types of nerve agent and pesticide poisonings as well as some types of slow heart rate, and to decrease saliva production during surgery. It is typically give ...
or physostigmine as an antidote is not recommended. If a patient is delirious or agitated, this can usually be treated by reassurance and, if necessary, physical restraints. A
benzodiazepine Benzodiazepines (BZD, BDZ, BZs), colloquially known as "benzos", are a class of central nervous system (CNS) depressant, depressant drugs whose core chemical structure is the fusion of a benzene ring and a diazepine ring. They are prescribed t ...
such as diazepam or lorazepam can be used to control combativeness, agitation, muscular overactivity, and seizures. Only small doses should be used, as they may worsen the Respiratory depression, respiratory depressant effects of muscimol. Recurrent vomiting is rare, but if present may lead to fluid and electrolyte imbalances; intravenous rehydration or electrolyte replacement may be required. Serious cases may develop loss of consciousness or
coma A coma is a deep state of prolonged unconsciousness in which a person cannot be awakened, fails to Nociception, respond normally to Pain, painful stimuli, light, or sound, lacks a normal Circadian rhythm, sleep-wake cycle and does not initiate ...
, and may need intubation and artificial ventilation. Hemodialysis can remove the toxins, although this intervention is generally considered unnecessary. With modern medical treatment the prognosis is typically good following supportive treatment.


Uses


Psychoactive

The wide range of Psychoactive drug, psychoactive effects have been variously described as depressant, sedative-hypnotic, Psychedelic drug, psychedelic, dissociative, or
deliriant Deliriants are a subclass of hallucinogen. The term was coined in the early 1980s to distinguish these drugs from psychedelics such as LSD and dissociatives such as ketamine, due to their primary effect of causing delirium, as opposed to th ...
; Paradoxical reaction, paradoxical effects such as Stimulant, stimulation may occur however. Perceptual phenomena such as synesthesia, macropsia, and micropsia may occur; the latter two effects may occur either simultaneously or alternatingly, as part of Alice in Wonderland syndrome, collectively known as dysmetropsia, along with related distortions pelopsia and teleopsia. Some users report lucid dreaming under the influence of its hypnotic effects. Unlike ''Psilocybe cubensis'', ''A. muscaria'' cannot be commercially Fungiculture, cultivated, due to its mycorrhizal relationship with the roots of
pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. ''World Flora Online'' accepts 134 species-rank taxa (119 species and 15 nothospecies) of pines as cu ...
trees. However, following the outlawing of psilocybin mushrooms in the United Kingdom in 2006, the sale of the still legal ''A. muscaria'' began increasing. Marija Gimbutas reported to R. Gordon Wasson that in remote areas of Lithuania, ''A. muscaria'' has been consumed at wedding feasts, in which mushrooms were mixed with vodka. She also reported that the Lithuanians used to export ''A. muscaria'' to the Sami people, Sami in the Far North for use in shamanic rituals. The Lithuanian festivities are the only report that Wasson received of ingestion of fly agaric for religious use in Eastern Europe.


Siberia

''A. muscaria'' was widely used as an entheogen by many of the indigenous peoples of Siberia. Its use was known among almost all of the Uralic languages, Uralic-speaking peoples of western Siberia and the Paleosiberian-speaking peoples of the Russian Far East. There are only isolated reports of ''A. muscaria'' use among the Tungusic peoples, Tungusic and Turkic peoples of central Siberia and it is believed that on the whole entheogenic use of ''A. muscaria'' was not practised by these peoples. In western Siberia, the use of ''A. muscaria'' was restricted to shamans, who used it as an alternative method of achieving a trance state. (Normally, Siberian shamans achieve trance by prolonged drumming and dancing.) In eastern Siberia, ''A. muscaria'' was used by both shamans and laypeople alike, and was used recreationally as well as religiously. In eastern Siberia, the shamanism, shaman would take the mushrooms, and others would drink his urine. This urine, still containing psychoactive elements, may be more potent than the ''A. muscaria'' mushrooms with fewer negative effects such as sweating and twitching, suggesting that the initial user may act as a screening filter for other components in the mushroom. The Koryaks, Koryak of eastern Siberia have a story about the fly agaric (''wapaq'') which enabled Big Raven to carry a whale to its home. In the story, the deity ''Vahiyinin'' ("Existence") spat onto earth, and his spittle became the ''wapaq'', and his saliva becomes the warts. After experiencing the power of the ''wapaq'', Raven was so exhilarated that he told it to grow forever on earth so his children, the people, could learn from it. Among the Koryaks, one report said that the poor would consume the urine of the wealthy, who could afford to buy the mushrooms. It was reported that the local reindeer would often follow an individual intoxicated by the muscimol mushroom, and if said individual were to urinate in snow the reindeer would become similarly intoxicated and the Koryaks, Koryak people's would use the drunken state of the reindeer to more easily rope and hunt them.


Recent rise in popularity

As a result of a lack of regulation, the use of ''Amanita muscaria'' as a popular legal alternative to Hallucinogen, hallucinogens has grown exponentially in recent years. In 2024, Google Trends, Google searches for Amanita muscaria rose nearly 200% from the previous year, a trend that an article published in the American Journal of Preventive Medicine, American Journal of Preventative Medicine correlated with the sudden commercialization of ''Amanita muscaria'' products on the internet. While Amanita mushrooms are unscheduled in the United States, they are listed as a poison by the FDA. Amanita mushrooms and muscimol are not approved as an ingredient in food, with some drawing comparisons to the controversial legal status of Agriculture Improvement Act of 2018, hemp-derived cannabinoids. The FDA is currently evaluating the use of ''Amanita muscaria'' and its constituents in dietary supplements, reminding manufacturers to ensure their ingredients meet safety standards and encouraging them to consult the Office of Dietary Supplement Programs with any questions. A recent outbreak of poisonings and at least one death associated with products containing ''Amanita muscaria'' extracts has sparked debates regarding the Drug prohibition, regulatory status of Amanita mushrooms and their psychoactive constituents, prompting an FDA ban of their use in food products in December 2024. These products often use misleading advertising, such as erroneous comparisons to Psilocybin mushroom, Psilocybin mushrooms or simply not disclosing the inclusion of Amanita mushrooms on the packaging.


Other reports and theories

The Finnish historian T. I. Itkonen mentions that ''A. muscaria'' was once used among the Sámi peoples. Sorcerers in Inari, Finland, Inari would consume fly agarics with seven spots. In 1979, Said Gholam Mochtar and Hartmut Geerken published an article in which they claimed to have discovered a tradition of medicinal and recreational use of this mushroom among a Parachi-speaking group in Afghanistan. There are also unconfirmed reports of religious use of ''A. muscaria'' among two Subarctic Indigenous peoples of the Americas, Native American tribes. Ojibwa ethnobotanist Keewaydinoquay Peschel reported its use among her people, where it was known as (an abbreviation of the name (= "red-top mushroom"). This information was enthusiastically received by Wasson, although evidence from other sources was lacking. There is also one account of a Euro-American who claims to have been initiated into traditional Tlicho use of ''Amanita muscaria''. Mycophilosopher Martijn Benders has proposed a novel evolutionary theory involving ''Amanita muscaria''. In his book ''Amanita Muscaria – the Book of the Empress'', Benders argues that a precursor of ibotenic acid, a compound found in the mushroom, was present in ancient seaweed and played a significant role in the evolution of life. According to this hypothesis, the compound influenced the twitching movements of early aquatic organisms, leading to the development of behaviors such as jumping onto land—a crucial step in the evolution of terrestrial species. The flying reindeer of
Santa Claus Santa Claus (also known as Saint Nicholas, Saint Nick, Father Christmas, Kris Kringle or Santa) is a legendary figure originating in Western Christian culture who is said to bring gifts during the late evening and overnight hours on Chris ...
, who is called Joulupukki in Finland, could symbolize the use of ''A. muscaria'' by Sámi shamans. However, Sámi scholars and the Sámi peoples themselves refute any connection between Santa Claus and Sámi history or culture.
"The story of Santa emerging from a Sámi shamanic tradition has a critical number of flaws," asserts Tim Frandy, assistant professor of Nordic Studies at the University of British Columbia and a member of the Sámi descendent community in North America. "The theory has been widely criticized by Sámi people as a stereotypical and problematic romanticized misreading of actual Sámi culture."


= Vikings

= The notion that Vikings used ''A. muscaria'' to produce their
berserker In the Old Norse written corpus, berserkers () were Scandinavian warriors who were said to have fought in a trance-like fury, a characteristic which later gave rise to the modern English adjective ''wikt:berserk#Adjective, berserk'' . Berserkers ...
rages was first suggested by the Swedish professor Samuel Ödmann in 1784. Ödmann based his theories on reports about the use of fly agaric among Shamanism in Siberia, Siberian shamans. The notion has become widespread since the 19th century, but no contemporary sources mention this use or anything similar in their description of berserkers. Muscimol is generally a mild relaxant, but it can create a range of different reactions within a group of people. It is possible that it could make a person angry, or cause them to be "very jolly or sad, jump about, dance, sing or give way to great fright". Comparative analysis of symptoms have, however, since shown ''Hyoscyamus niger'' to be a better fit to the state that characterises the berserker rage.


= Soma

= In 1968, R. Gordon Wasson proposed that ''A. muscaria'' was the '' soma'' talked about in the Rigveda of India, a claim which received widespread publicity and popular support at the time. He noted that descriptions of ''soma'' omitted any description of roots, stems or seeds, which suggested a mushroom, and used the adjective ''hári'' "dazzling" or "flaming" which the author interprets as meaning red. One line described men urinating ''soma''; this recalled the practice of recycling urine in Siberia. Soma is mentioned as coming "from the mountains", which Wasson interpreted as the mushroom having been brought in with the Aryan migrants from the north. Indian scholars Santosh Kumar Dash and Sachinanda Padhy pointed out that both eating of mushrooms and drinking of urine were proscribed, using as a source the ''Manusmṛti''. In 1971, Vedic scholar John Brough from Cambridge University rejected Wasson's theory and noted that the language was too vague to determine a description of Soma. In his 1976 survey, ''Hallucinogens and Culture'', anthropologist Peter T. Furst evaluated the evidence for and against the identification of the fly agaric mushroom as the Vedic Soma, concluding cautiously in its favour. Kevin Feeney and Trent Austin compared the references in the Vedas with the filtering mechanisms in the preparation of Amanita muscaria and published findings supporting the proposal that fly-agaric mushrooms could be a likely candidate for the sacrament. Other proposed candidates include ''Psilocybe cubensis'', ''Peganum harmala'', and ''Ephedra (genus), Ephedra.''


= Christianity

= Philologist, archaeologist, and Dead Sea Scrolls scholar John Marco Allegro postulated that early Christian theology was derived from a fertility cult revolving around the entheogenic consumption of ''A. muscaria'' in his 1970 book ''The Sacred Mushroom and the Cross.'' This theory has found little support by scholars outside the field of ethnomycology. The book was widely criticized by academics and theologians, including Godfrey Rolles Driver, Sir Godfrey Driver, emeritus Professor of Semitic Philology at Oxford University and Henry Chadwick (theologian), Henry Chadwick, the Dean of Christ Church, Oxford. Christian author John C. King wrote a detailed rebuttal of Allegro's theory in the 1970 book ''A Christian View of the Mushroom Myth''; he notes that neither fly agarics nor their host trees are found in the Middle East, even though cedars and pines are found there, and highlights the tenuous nature of the links between biblical and Sumerian names coined by Allegro. He concludes that if the theory were true, the use of the mushroom must have been "the best kept secret in the world" as it was so well concealed for two thousand years.


Fly trap

''Amanita muscaria'' is traditionally used for catching flies possibly due to its content of
ibotenic acid Ibotenic acid or (''S'')-2-amino-2-(3-hydroxyisoxazol-5-yl)acetic acid, also referred to as ibotenate, is a naturally occurring alpha-amino acid found in certain ''Amanita'' mushrooms, that primarily acts as a potent glutamate receptor agonist ...
and muscimol, which lead to its common name "fly agaric". Recently, an analysis of nine different methods for preparing ''A. muscaria'' for catching flies in Slovenia have shown that the release of ibotenic acid and muscimol did not depend on the solvent (milk or water) and that thermal and mechanical processing led to faster extraction of ibotenic acid and muscimol.


Culinary

The toxins in ''A. muscaria'' are water-soluble: parboiling ''A. muscaria'' fruit bodies can detoxify them and render them edible, although consumption of the mushroom as a food has never been widespread. The consumption of detoxified ''A. muscaria'' has been practiced in some parts of Europe (notably by Russian settlers in Siberia) since at least the 19th century, and likely earlier. The German physician and naturalist Georg Heinrich von Langsdorff wrote the earliest published account on how to detoxify this mushroom in 1823. In the late 19th century, the French physician Félix Archimède Pouchet was a populariser and advocate of ''A. muscaria'' consumption, comparing it to manioc, an important food source in tropical South America that must also be detoxified before consumption. Use of this mushroom as a food source also seems to have existed in North America. A classic description of this use of ''A. muscaria'' by an African-American mushroom seller in Washington, D.C., in the late 19th century is described by American botanist Frederick Vernon Coville. In this case, the mushroom, after parboiling, and soaking in vinegar, is made into a mushroom sauce for steak. It is also consumed as a food in parts of Japan. The most well-known current use as an edible mushroom is in Nagano Prefecture, Japan. There, it is primarily salted and pickled. A 2008 paper by food historian William Rubel and mycologist David Arora gives a history of consumption of ''A. muscaria'' as a food and describes detoxification methods. They advocate that ''Amanita muscaria'' be described in field guides as an edible mushroom, though accompanied by a description on how to detoxify it. The authors state that the widespread descriptions in field guides of this mushroom as poisonous is a reflection of cultural bias, as several other popular edible species, notably morels, are also toxic unless properly cooked.


In culture

The red-and-white spotted toadstool is a common image in many aspects of popular culture. Garden ornaments and children's picture books depicting gnomes and fairy, fairies, such as the Smurfs, often show fly agarics used as seats, or homes. Fly agarics have been featured in paintings since the
Renaissance The Renaissance ( , ) is a Periodization, period of history and a European cultural movement covering the 15th and 16th centuries. It marked the transition from the Middle Ages to modernity and was characterized by an effort to revive and sur ...
, albeit in a subtle manner. For instance, in Hieronymus Bosch's painting, ''The Garden of Earthly Delights'', the mushroom can be seen on the left-hand panel of the work. In the Victorian era they became more visible, becoming the main topic of some fairy paintings. Two of the most famous uses of the mushroom are in the ''Mario (franchise), Mario'' franchise (specifically two of the Super Mario#Power-ups and transformations, Super Mushroom power-up items and the platforms in several stages which are based on a fly agaric), and the dancing mushroom sequence in the 1940 Disney film '' Fantasia''. An account of the journeys of Philip Johan von Strahlenberg, Philip von Strahlenberg to Siberia and his descriptions of the use of the ''mukhomor'' there was published in English in 1736. The drinking of urine of those who had consumed the mushroom was commented on by Anglo-Irish writer
Oliver Goldsmith Oliver Goldsmith (10 November 1728 – 4 April 1774) was an Anglo-Irish people, Anglo-Irish poet, novelist, playwright, and hack writer. A prolific author of various literature, he is regarded among the most versatile writers of the Georgian e ...
in his widely read 1762 novel, ''Citizen of the World''. The mushroom had been identified as the fly agaric by this time. Other authors recorded the distortions of the size of perceived objects while intoxicated by the fungus, including naturalist Mordecai Cubitt Cooke in his books ''The Seven Sisters of Sleep'' and ''A Plain and Easy Account of British Fungi''. This observation is thought to have formed the basis of the effects of eating the mushroom in the 1865 popular story ''Alice's Adventures in Wonderland''. A hallucinogenic "scarlet toadstool" from Lappland is featured as a plot element in Charles Kingsley's 1866 novel ''Hereward the Wake (novel), Hereward the Wake'' based on the Hereward the Wake, medieval figure of the same name.
Thomas Pynchon Thomas Ruggles Pynchon Jr. ( , ; born May 8, 1937) is an American novelist noted for his dense and complex novels. His fiction and non-fiction writings encompass a vast array of subject matter, Literary genre, genres and Theme (narrative), th ...
's 1973 novel ''Gravity's Rainbow'' describes the fungus as a "relative of the poisonous Destroying angel" and presents a detailed description of a character preparing a cookie bake mixture from harvested ''Amanita muscaria''. Fly agaric shamanism—in the context of a surviving Dionysus, Dionysian cult in the Peak District—is also explored in the 2003 novel ''Thursbitch'' by Alan Garner.


See also

* List of Amanita species, List of ''Amanita'' species * Legal status of psychoactive Amanita mushrooms, Legal status of psychoactive ''Amanita'' mushrooms * Mushroom edible * Psychedelic mushroom store


References


Works cited

* * * * * * * * *


External links


Webpages on ''Amanita species''
by Tulloss and Yang Zhuliang

by IPCS INCHEM
Amanita - Erowid

Amanita muscaria - PsychonautWiki

Amanita Muscaria: Fly Agaric — The Psychedelic “Mario” Mushroom 🍄 - Tripsitter

The Trippy Truth About Amanita muscaria, The World’s Most Famous Mushroom - Double Blind Magazine
{{Authority control Amanita, muscaria Entheogens Fungi of Asia Fungi of Europe Fungi of North America Oneirogens Poisonous fungi Psychoactive fungi Fungi described in 1753 Soma (drink) Taxa named by Carl Linnaeus Fungi of the United Kingdom Fungus species Hallucinogens