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 ?
Change in ibotenic acid and muscimol contents in Amanita muscaria during drying, storing or cooking.
Some of the mycorrhizal mushrooms including Laccaria bicolor (Martin et al., 2008), Tuber melanosporum (Martin et al., 2010) and Amanita species (Wolfe et al., 2012) are reported to have lost most of their enzymes degrading plant cell wall over a period of time.
Ag bioaccumulation was found in other Amanita species with much higher values of BCF [13].
Using literature to explore the biogeography and invasion biology of the death cap mushroom Amanita phalloides (Vaill.
Mae 'na dybiaeth fod y Lapiaid wedi darganfod effeithiau amanita'r gwybed drwy sylwi ar yr effaith roedd y madarch yn ei gael ar y ceirw oedd yn ei fwyta.
Los generos mas ricos en especies son Amanita (4), Inocybe (4), Russula (4), Auricularia (3), Marasmius (3), Ganoderma (3) y Hexagonia (3).
Mushroom gathering doesn't come without its risks however, and digesting a toxic death cap mushroom (amanita phalloides) can be fatal.
"One of the poisonous mushrooms, the Amanita egg, looks just like a delicious gem-studded Puffball mushroom," Johnson said, recalling an incident in which he said a Eugene homeless man mistook the former for the latter.
There are a few birch trees growing nearby, and last night on our way down to dinner, I discovered a perfect, tall, red and white Amanita muscaria.
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