Amanita ovoidea

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Amanita ovoidea
Amanita ovoidea 1.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Amanitaceae
Genus: Amanita
Species:
A. ovoidea
Binomial name
Amanita ovoidea
(Bull.) Link (1833) [1]
Amanita ovoidea
Information icon.svg
Gills icon.png Gills on hymenium
Convex cap icon.svgFlat cap icon.svg Cap is convex or flat
Free gills icon2.svg Hymenium is free
Ring and volva stipe icon.svg Stipe has a ring and volva
Transparent spore print icon.svg
Transparent spore print icon.svg
Spore print is white to cream
Mycorrhizal fungus.svgEcology is mycorrhizal
Mycomorphbox Caution.pngEdibility is not recommended

The European white egg (Amanita ovoidea), bearded amanita or European egg amidella, is a species of fungus of the genus Amanita in the family Amanitaceae . It is a large, white-colored fungus, often tinged with cream. Native to Europe, it is found on plains as well as mountains in the Mediterranean region. It is similar to some deadly poisonous species.

Contents

Taxonomy

The species was first described in 1833 by Pierre Bulliard, a French physician and botanist, and Lucien Quélet, a French mycologist and naturalist.

Description

The mushroom is white to cream-coloured and can reach very large sizes, over 15 centimetres (6 inches), or in exceptional cases over 30 cm. The cap is smooth, fleshy, silky, hemispherical when young, but soon becoming convex to shield shaped. The cap margin is usually covered with hanging, cottony remains of the partial veil. The lamellae are thick, rounded, broad and are free from the stipe. The stipe is thick, cylindrical, powdery, has a fragile, cottony ring, and a large, white to ochraceous-cream volva at the base. The flesh is thick, white and has a strong, unpleasant smell. The spore print is white, and the elliptical spores measure 10–12 × 6.5–8 μm. [2] [3]

Similar species

Amanita proxima , a poisonous species containing allenic norleucine, is very similar to A. ovoidea. It is separated by the deep ochraceous to russet-orange colour of its volva, the persistent pendulous ring on the stipe, and the smooth cap margin, without vellar remains. A. proxima is found in the same habitats as A. ovoidea, and can cause cytolytic hepatitis and acute renal failure. [4]

It is also similar to all-white, deadly poisonous Amanita species such as A. virosa and A. verna . [5]

Distribution and habitat

Native to Europe, it is found on plains as well as mountains in the Mediterranean region.

Amanita ovoidea is a symbiotic fungus, forming mycorrhizal associations with pine trees, as well as evergreen and deciduous oaks. [6] [7] It is found in coniferous forests, deciduous forests, coastal regions, mountains, roadsides and grassy areas, [6] [8] growing on limy, sandy and alkaline soils. [9] The mushroom grows semi-buried in the ground, and collected specimens are often covered with sand.

Conservation

In Bulgaria, the species is in danger due to habitat loss caused by selective logging, human settlements and natural causes like acid rain and soil pollution. [9]

Edibility

The edibility of Amanita ovoidea is dubious. In the past, the fungus has been reported as "edible" in some books and "poisonous" in others. [5] Moreover, it can easily be confused with other all-white, deadly poisonous Amanita species, such as A. virosa, A. verna and, in particular, A. proxima. [5] In southern France, some people were inflicted with acute kidney injury because they accidentally consumed A. proxima, mistaking it for A. ovoidea. [10] [11] Similar cases of poisoning have also been reported from Cyprus. [12] [13]

A 2008 study on the minerals in fungi from northwest Turkey, including this species, concluded that A. ovoidea was safe to eat and could fulfill nutritional needs. [14]

See also

Related Research Articles

<i>Amanita phalloides</i> Poisonous mushroom (death cap)

Amanita phalloides, commonly known as the death cap, is a deadly poisonous basidiomycete fungus, one of many in the genus Amanita. Widely distributed across Europe, but introduced to other parts of the world since the late twentieth century, A. phalloides forms ectomycorrhizas with various broadleaved trees. In some cases, the death cap has been introduced to new regions with the cultivation of non-native species of oak, chestnut, and pine. The large fruiting bodies (mushrooms) appear in summer and autumn; the caps are generally greenish in colour with a white stipe and gills. The cap colour is variable, including white forms, and is thus not a reliable identifier.

<span class="mw-page-title-main">Destroying angel</span> Deadly poisonous fungus

The name destroying angel applies to several similar, closely related species of deadly all-white mushrooms in the genus Amanita. They are Amanita virosa in Europe and A. bisporigera and A. ocreata in eastern and western North America, respectively. Another European species of Amanita referred to as the destroying angel, Amanita verna - also referred to as the 'Fool's mushroom' - was first described in France in 1780.

<i>Amanita</i> Genus of mushrooms including some very deadly species

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 species. The genus is responsible for approximately 95% of fatalities resulting from mushroom poisoning, with the death cap accounting for about 50% on its own. The most potent toxin present in these mushrooms is α-Amanitin.

<i>Amanita virosa</i> Species of fungus

Amanita virosa, commonly known in Europe as the destroying angel or the European destroying angel amanita, is a deadly poisonous basidiomycete fungus, one of many in the genus Amanita. Occurring in Europe, A. virosa associates with various deciduous and coniferous trees. The large fruiting bodies appear in summer and autumn; the caps, stipes and gills are all white in colour.

<i>Macrolepiota procera</i> Species of fungus

Macrolepiota procera, the parasol mushroom, is a basidiomycete fungus with a large, prominent fruiting body resembling a parasol. It is a fairly common species on well-drained soils. It is found solitary or in groups and fairy rings in pastures and occasionally in woodland. Globally, it is widespread in temperate regions.

<i>Amanita calyptroderma</i> Species of fungus

Amanita calyptroderma also known as coccora, coccoli or the Pacific amanita, is a white-spored mushroom that fruits naturally in the coastal forests of the western United States during the fall and winter and spring.

<i>Amanita verna</i> Species of fungus

Amanita verna, commonly known as the fool's mushroom or the spring destroying angel, is a deadly poisonous basidiomycete fungus, one of many in the genus Amanita. Occurring in Europe in spring, A. verna associates with various deciduous and coniferous trees. The caps, stipes and gills are all white in colour.

<i>Agaricus campestris</i> Species of fungus

Agaricus campestris is a widely eaten gilled mushroom closely related to the cultivated A. bisporus. A. campestris is commonly known as the field mushroom or, in North America, meadow mushroom.

<i>Amanita ocreata</i> Species of poisonous fungus in the genus Amanita

Amanita ocreata, commonly known as the death angel, destroying angel, angel of death or more precisely western North American destroying angel, is a deadly poisonous basidiomycete fungus, one of many in the genus Amanita. The large fruiting bodies generally appear in spring; the cap may be white or ochre and often develops a brownish centre, while the stipe, ring, gill and volva are all white. A. ocreata resemble several edible species commonly consumed by humans, increasing the risk of accidental poisoning. Mature fruiting bodies can be confused with the edible A. velosa, A. lanei or Volvopluteus gloiocephalus, while immature specimens may be difficult to distinguish from edible Agaricus mushrooms or puffballs.

<i>Amanita vaginata</i> Species of fungus

Amanita vaginata, commonly known as the grisette or the grisette amanita, is an edible mushroom in the fungus family Amanitaceae. The cap is gray or brownish, 5 to 10 centimetres in diameter, and has furrows around the edge that duplicate the gill pattern underneath. Unlike many other Amanita mushrooms, A. vaginata lacks a ring on the stem.

<i>Amanita onusta</i> Species of fungus

Amanita onusta, commonly known as the loaded Lepidella, the gunpowder Lepidella or the gunpowder amanita, is a species of fungus in the mushroom family Amanitaceae. It is characterized by its small to medium-sized fruit bodies that have white to pale gray caps crowded with roughly conical, pyramidal, or irregular gray warts. The stipe is whitish-gray with woolly or wart-like veil remnants, and at the base is a spindle- or turnip-shaped base that is rooted somewhat deeply in the soil.

<i>Amanita bisporigera</i> Poisonous species of fungus in the family Amanitaceae endemic to North America

Amanita bisporigera is a deadly poisonous species of fungus in the family Amanitaceae. It is commonly known as the eastern destroying angel amanita, the eastern North American destroying angel or just as the destroying angel, although the fungus shares this latter name with three other lethal white Amanita species, A. ocreata, A. verna and A. virosa. The mushroom has a smooth white cap that can reach up to 10 centimetres across and a stipe up to 14 cm tall with a white skirt-like ring near the top. The bulbous stipe base is covered with a membranous sac-like volva. The white gills are free from attachment to the stalk and crowded closely together. As the species name suggests, A. bisporigera typically bears two spores on the basidia, although this characteristic is not immutable. A. bisporigera closely resembles a few other white amanitas, including the equally deadly A. virosa and A. verna.

<i>Amanita aestivalis</i> Species of fungus

Amanita aestivalis, commonly known as the white American star-footed amanita, is a species of fungus in the mushroom family Amanitaceae. The cap of the white fruit body is 5 to 8.5 centimetres in diameter. It sits atop a stem that is 8.5 to 16 cm long. The entire fruit body will slowly stain a reddish-brown color in response to bruising. A. aestivalis may be a synonym for A. brunnescens, and may be confused with several other white-bodied amanitas. The fungus is distributed in eastern North America.

<i>Amanita exitialis</i> Species of fungus

Amanita exitialis, also known as the Guangzhou destroying angel, is a mushroom of the large genus Amanita. It is distributed in eastern Asia, and probably also in India where it has been misidentified as A. verna. Deadly poisonous, it is a member of section Phalloideae and related to the death cap A. phalloides. The fruit bodies (mushrooms) are white, small to medium-sized with caps up to 7 cm (2.8 in) in diameter, a somewhat friable ring and a firm volva. Unlike most agaric mushrooms which typically have four-spored basidia, the basidia of A. exitialis are almost entirely two-spored. Eight people were fatally poisoned in China after consuming the mushroom in 2000, and another 20 have been fatally poisoned since that incident. Molecular analysis shows that the species has a close phylogenetic relationship with three other toxic white Amanitas: A. subjunquillea var. alba, A. virosa and A. bisporigera.

<i>Amanita crocea</i> Species of fungus

Amanita crocea, the saffron ringless amanita, is a species of Amanita widely distributed in Europe. It is not recommended for consumption due to its similarity to poisonous species of the genus.

<i>Amanita pseudoporphyria</i> Species of fungus

Amanita pseudoporphyria, also known as Hongo's false death cap, is a species of agaric fungus from the genus Amanita.

<i>Amanita pachycolea</i> Species of fungus

Amanita pachycolea, commonly known as the western grisette or the Stuntz's great ringless amanita, is a species of agaric fungus in the family Amanitaceae.

Amanita subpallidorosea is a mushroom of the large genus Amanita, which occurs under oaks in southern China and Taiwan.

<i>Amanita crenulata</i> Toxic species of mushroom

Amanita crenulata, also known as the poison champagne amanita, is a species of fungus that is very common in the Northeast United States.

Amanita hygroscopia, also known as the pink-gilled destroying angel is a deadly poisonous fungus, one of many in the genus Amanita.

References

  1. Index Fungorum
  2. Galli R. 2007. Le Amanite 2nd Edition. Edinatura.
  3. Neville P, Poumarat S. 2004. Fungi Europaei 9: Amanitae. Edizioni Candusso, Italia.
  4. Ducros J, Labastie J and Saingra S. (1995). Una observation supplementaire d’intoxication par Amanita proxima a l’origine d’insuffisance renale aigue. Nephrologie, 16: 341.
  5. 1 2 3 Pérez Calvo200, Javi (2009-01-23). "Amanita ovoid". Fungipedia. Retrieved 2010-05-24.{{cite web}}: CS1 maint: numeric names: authors list (link)
  6. 1 2 "Amanita ovoidea". Roger's Mushrooms. Archived from the original on 2010-12-31. Retrieved 2010-05-24.
  7. "Amanita ovoidea (Bull.: Fr)". Agraria. Retrieved 2010-05-24.
  8. R E, Tulloss. "Amanita ovoidea".
  9. 1 2 "Amanita ovoidea". Red Data Book of Bulgaria.
  10. de Haro L, Jouglard J, Arditti J, David JM. (1998). Acute renal insufficiency caused by Amanita proxima poisoning: experience of the Poison Center of Marseille. Nephrologie (19): 21–4.
  11. Leray H, Canaud B, Andary C, Klouche K, Béraud JJ and Mion C. (1994). Intoxication par Amanita proxima. Néphrologie 15: 197-199.
  12. Loizides M., Kyriakou T., Tziakouris A. (2011). Edible & Toxic Fungi of Cyprus. 1st Edition, 304 p. ISBN   978-9963-7380-0-7
  13. Loizides M, Bellanger JM, Yiangou Y, Moreau PA. (2018). Preliminary phylogenetic investigations into the genus Amanita (Agaricales) in Cyprus, with a review of previous records and poisoning incidents. Documents Mycologiques 37, 201–218.
  14. "Minor element and heavy metal content of edible wild mushrooms native to Bolu, North-West Turkey". Fresenius Environmental Bulletin. 17 (2): 249–252. 2008. Archived from the original on 2012-03-22. Retrieved 2010-05-24.