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Amanita muscaria

Fly Agaric


Amanita muscaria

(L.:Fr.) Lam.
Matamosca
Mata-moscas

Family: Amanitaceae
Order: Agaricales
Class: Agaricomycetes
Phylum / Division: Basidiomycota
Kingdom: Fungi

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Other common names: Falsa Oronja.





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DANGEROUS


Description


Description: It is a highly recognizable mushroom due to its bright red cap with white warts, an iconic feature in popular imagery. The fruiting body displays a cap ranging from orange to vivid red, covered with remnants of the universal veil forming white patches. The stem is white, cylindrical, and sturdy, featuring a well-defined ring and a bulbous base with a volva. The gills are white, free, and crowded, producing white spores. As it matures, the cap flattens and may lose some warts due to rainfall.

Geographic distribution: This species is widely distributed across temperate and boreal regions of the Northern Hemisphere, including Europe, Asia, and North America. It has also been introduced into the Southern Hemisphere, such as South America and Oceania, often associated with non-native tree plantations. In regions like Argentina, it is commonly found in pine and birch forests. The species corresponds to Amanita muscaria.

Habitat: It grows mainly in coniferous and deciduous forests, forming symbiotic relationships with tree roots through mycorrhizae. It prefers acidic, well-drained soils and typically appears in autumn, although in colder climates it may fruit in late summer. It is often found in moist, shaded environments, sometimes in scattered groups.

Feeding: As a mycorrhizal fungus, it obtains nutrients through a mutualistic relationship with plants, exchanging minerals and water for carbohydrates produced by the host tree. This nutritional strategy is essential for forest ecosystems, enhancing nutrient uptake and contributing to soil dynamics.

Toxicity: It contains psychoactive and toxic compounds, mainly ibotenic acid and muscimol, which affect the central nervous system. Ingestion can cause nausea, vomiting, confusion, hallucinations, drowsiness, and motor disturbances. Although it is rarely fatal, its consumption is considered unsafe and not suitable for eating. The severity of effects varies depending on dosage, preparation, and individual sensitivity.

Reproduction: It reproduces via spores, which are released from the gills and dispersed by the wind. When they germinate under suitable conditions, they form a mycelium that can eventually produce new fruiting bodies. The development of the mushroom is regulated by complex environmental cues.

Conservation status: It is generally considered of least concern, given its wide distribution. However, local populations may be affected by habitat loss and changes in forest composition.


Author of this compilation: EcoRegistros – 04/12/2026





Geographic distribution


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Species photographs

Count: 13

Foto
Photography ID: 680215
 
Villa Pehuenia
Neuquén
Argentina
03/23/2026
Hugo Caverzasi
Foto
Photography ID: 636679
 
Tandil
Buenos Aires
Argentina
06/01/2025
Santiago Juan Torres
Foto
Photography ID: 614362
 
Los Lagos
Neuquén
Argentina
04/12/2024
Adrian Braidotti
Foto
Photography ID: 581881
♂ ♀
  Button stage

San Martin de los Andes
Neuquén
Argentina
04/18/2024
Hernán Tolosa
Foto
Photography ID: 564533
  Adult

Tandil
Buenos Aires
Argentina
05/01/2023
Liliana Rubilar Puerta
Foto
Photography ID: 564532
  Adult

Tandil
Buenos Aires
Argentina
05/01/2023
Liliana Rubilar Puerta
Foto
Photography ID: 564531
  Adult

Tandil
Buenos Aires
Argentina
05/01/2023
Liliana Rubilar Puerta
Foto
Photography ID: 539085
  Adult

Poços de caldas
Minas Gerais
Brazil
06/20/2023
Valquiria Fernanda Luz
Foto
Photography ID: 536646
  Mature Fruitbody

Tanti
Córdoba
Argentina
07/31/2014
Aluminé Sangorrín
Foto
Photography ID: 536555
  Mature Fruitbody

Camino sin nombrar
Buenos Aires
Argentina
05/25/2023
Santiago Juan Torres
Foto
Photography ID: 493125
  Mature Fruitbody

La Cumbrecita
Córdoba
Argentina
04/07/2022
Jorge Omar Lanza



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 Detail of places sorted by number of records






Species records

Count: 13



Page 1 of 2
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
245385223/03/2026ArgentinaNeuquénLago Moquehue, Villa PehueniaHugo Caverzasi
231100725/06/202511:25ArgentinaMisionesCamino sin nombrar1Walter Liriel Gómez Umpierrez
231018825/06/202511:25ArgentinaMisionesCamino sin nombrar1Diego Oscar
230933525/06/202511:25ArgentinaMisionesCamino sin nombrar1Santiago Juan Torres
229416701/06/202514:21ArgentinaBuenos AiresTandil1Santiago Juan Torres
202738818/04/2024ArgentinaNeuquénLaguna Rosales, San Martin de los AndesJorgelina Lopez
202738018/04/2024ArgentinaNeuquénLaguna Rosales, San Martin de los AndesHernán Tolosa
220804112/04/2024ArgentinaNeuquénVilla La Angostura, Los LagosAdrian Braidotti
178214520/06/2023BrazilMinas GeraisPoços de caldasValquiria Fernanda Luz
177192125/05/2023ArgentinaBuenos AiresCamino sin nombrarSantiago Juan Torres
Page 1 of 2

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Fly Agaric (Amanita muscaria) – Species account. Accessed from www.ecoregistros.org on 25/09/2026.