Amanita


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Related to Amanita: Amanita phalloides, Fly amanita

Amanita

(ăm'ənī`tə): see mushroommushroom,
type of basidium fungus characterized by spore-bearing gills on the underside of the umbrella- or cone-shaped cap. The name toadstool is popularly reserved for inedible or poisonous mushrooms, but this classification has no scientific basis.
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Amanita

 

a genus of hymenomycetous gill fungi of the order Agaricales. The fruiting body in young Amanita is enclosed in the universal veil, which ruptures and remains in the form of a membrane or scales at the base of the stipe or in the form of white flakes on the surface of the cap. Most species of Amanita also have a partial veil in the form of an annulus on the stipe.

Many Amanita are poisonous, particularly the death cup (Amanita phalloides). Fly agaric (A. muscaria), which has a typically bright cap, is slightly poisonous. The toxicity of death cup is caused by the presence of thermostable toxins—phalloi-dine, α-amanitine, and β-amanitine—which poison animals and humans, often resulting in death. Fly agaric contains the toxic alkaloids muscarine and fungal atropine. There are some edible species of Amanita, such as A. vaginata and blusher (A. rubescens), which has a dirtypink cap. In the USSR, species of Amanita usually grow in forests from June through October.

References in periodicals archive ?
AcH 505 promotes the growth and mycorrhiza formation by symbiotic fungi Amanita muscaria and Suillus bovinus, but it is antagonistic against Heterobasidion annosum.
Muscimol is five to 10 times more potent than ibotenic acid, and is likely the primary contributor to the psychoactive effects of Amanita muscaria intoxication.
Histologic evaluation of the livers from patients with amanita toxicity reveals diffuse centrilobular to midzonal necrosis.
Successful treatment of a child with fulminant liver failure and coma caused by Amanita Phalloides intoxication with albumin dialysis without liver transplantation.
Doctors called a mycologist who questioned the patient and identified the mushroom as the aptly named "death angel," or Amanita bisporigera, which contains the heat-stable toxin alpha-amanitin capable of destroying the liver.
And there she was, hot from the shower, steaming, her face and arms and breasts and back and belly flecked red and white, glowing there like an amanita in a birch forest.
Somewhere around page 389 of Lawrence Hill's The Book of Negroes, I realized I had become so completely engrossed in his masterful telling of the hard life and crueller times of Amanita Diallo that I had forgotten I was reading a novel.
A Department of Health spokesman said: "Salvia divinorum and amanita mushrooms are not scheduled substances under the Act.
Later in The Sacred Mushroom and the Cross (1970), Allegro hoped to convince his readers that early Christians were members of a fertility cult that feasted on the hallucinogenic red- and white-spotted cap mushroom, Amanita muscaria.
Mushroom poisoning (especially with Amanita phalloides) should be considered in presentations of ALF.
The genus name Amanita is a Latinized version of Greek 'Amanos', designating a mountain range in Southern Turkey, Amanita cesarea is called 'Cesar's mushroom' in English, Kaiserling in German and 'oronge' in French.
Included in the list of identified taxa present in The West Woods are several highly prized edible species, as well as several species known to be highly toxic (for example, Amanita spp.