Coker's Amanita

Amanita cokeri

"Amanita cokeri", commonly known as Coker's Amanita and Solitary Lepidella, is a mushroom in the Amanitaceae family. The mushroom is poisonous. First described as "Lepidella cokeri" in 1928, it was transferred to the genus "Amanita" in 1940.
Coker’s Amanita - Amanita cokeri I might be wrong, as I can’t find info on its occurance in Australia Amanita cokeri,Australia,Coker's Amanita,Eamw fungi,Geotagged,Winter

Appearance

Its cap is white in colour, and 7–15 cm across. It is oval to convex in shape. The surface is dry but sticky when wet. The cap surface is characterized by large pointed warts, white to brown in colour.

Gills are closely spaced and free from the stem. They are cream at first, but can turn white as the mushroom matures. Short-gills are frequent. Stem is white, measuring 10–20 cm long and 1–2 cm thick. It tapers slightly to the top, smooth to shaggy in texture. There is a ring, thick and often double-edged, the underside being tissuelike. The universal veil hangs from the top of the stipe. The basal bulb is considerably large in size, with concentric circles of down-turned scales. The volval remnants stick to it and cause irregular patches.

Spores are white, elliptical and amyloid. They measure 11-14 x 6-9 µ, and feel smooth. Flesh is white, and shows no change when exposed. There is no distinctive odour, but some specimens may develop the smell of decaying protein.
Coker's Amanita (Amanita cokeri) Habitat/Location: Top of forest ridge, growing in thick mulch/leaves below large hardwoods and pines. In Northeast Alabama (Cherokee County), US. Gills: White to cream, crowded, covered in a white veil Stipe: White, slightly scaled appearance, ending in large, ridged basal volva Cap: White, waxy texture, white warts around the edge. Spore print color: White Bruising: No major bruising noticeable. https://www.jungledragon.com/image/56230/amanita_cokeri_-_solitary_lepidella_cokers_amanita.html Amanita cokeri,Coker's Amanita,Fall,Geotagged,United States

Distribution

"A. cokeri" inhabits mixed coniferous or deciduous woods and also grows on the ground. It grows mainly on oak and pine trees, and leaves a white deposit. It grows isolated or in groups. It is mostly distributed in southeastern North America. It fruits from July to November.
Coker's Amanita - Amanita cokeri Habitat: Deciduous forest Amanita cokeri,Coker's Amanita,Fall,Geotagged,United States,amanita,fungus,mushroom

Habitat

"A. cokeri" inhabits mixed coniferous or deciduous woods and also grows on the ground. It grows mainly on oak and pine trees, and leaves a white deposit. It grows isolated or in groups. It is mostly distributed in southeastern North America. It fruits from July to November.
Coker's Amanita (Amanita cokeri) Large (around 18 cm tall), striking white mushroom with a white, waxy cap covered in white warts. White universal veil is present, entirely covering crowded cream-colored gills. Stipe is also white with shaggy or scaled appearance and ends in a large, ridged basal bulb. Basal bulb has concentric grooves. Spore print is white. Habitat: Top of forest ridge, growing in thick mulch/leaves below large hardwoods and pines. In Northeast Alabama (Cherokee County), US. https://www.jungledragon.com/image/65087/cokers_amanita_amanita_cokeri.html Amanita cokeri,Fall,Geotagged,United States,agaricales,agaricomycetes,amanita,amanitaceae,basidiomycota,coker's amanita,fungi,fungus,mushroom,mushrooms,solitary lepidella

Defense

In a study, the presence of non-protein amino acids 2-amino-3-cyclopropylbutanoic acid and 2-amino-5-chloro-4-pentenoic acid was revealed. The former acid was found to be toxic to the fungus "Cercospora kikuchii", the arthropod "Oncopeltus fasciatus" and the bacteria "Agrobacterium tumefaciens", "Erwinia amylovora", and "Xanthomonas campestris". The toxicity for bacteria could be eliminated by adding isoleucine to the medium. The other acid did not prove toxic.

References:

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Taxonomy
KingdomFungi
DivisionBasidiomycota
ClassAgaricomycetes
OrderAgaricales
FamilyAmanitaceae
GenusAmanita
SpeciesA. cokeri
Photographed in
Australia
United States of America