Amanita farinosa

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Amanita farinosa
Amanita farinosa.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. farinosa
Binomial name
Amanita farinosa
(Schw.)
Amanita farinosa
Information icon.svg
Gills icon.png Gills on hymenium
Flat cap icon.svgConvex cap icon.svg Cap is flat or convex
Free gills icon2.svg Hymenium is free
Bare stipe icon.svg Stipe is bare
Transparent spore print icon.svg
Spore print is white
Mycorrhizal fungus.svgEcology is mycorrhizal
Mycomorphbox Poison.pngEdibility is poisonous

Amanita farinosa, commonly known as the eastern American floury amanita or the American floury amanita, [1] is a North American poisonous mushroom of the genus Amanita , [2] a genus of fungi including some of the most deadly mushrooms.

Contents

Taxonomy

Two recent molecular studies show that A. farinosa is part of a subgroup within Amanita with its close relatives A. muscaria , A. gemmata and A. roseotincta . [3] [4]

Description

The cap is 2.5–7 centimetres (1–3 inches) in diameter, domed in young and flat in older specimens, with a striate margin. It is whitish grey and covered with brownish grey volval or mealy material. The gills are white. They may be attached to the stem or free. They are close and crowded and not bruising. The stem, or the stipe, lacks a ring and at its base a smallish bulb or volva. It measures up to 6.5 cm high, 13 cm thick. The stem is white to tan in color. [5] The spores are white. They are 5.58 x 68 µm in measurement and inamyloid. The spores are smooth and round to broadly elliptical. The flesh is white in color. It does not stain on exposure. [5] In old specimens, the smell can be strong and that of mink.

Distribution and habitat

An uncommon mushroom, it is found across North America in late summer to late autumn in coniferous or deciduous woodlands.

See also

Footnotes

  1. "Standardized Common Names for Wild Species in Canada". National General Status Working Group. 2020.
  2. Phillips, Roger (2010). Mushrooms and Other Fungi of North America. Buffalo, NY: Firefly Books. p. 19. ISBN   978-1-55407-651-2.
  3. Moncalvo J-M, Drehmel D, & Vilgalys R. (2000). Variation in modes and rates of evolution in nuclear and mitochondrial ribosomal DNA in the mushroom genus Amanita (Agaricales, Basidiomycota): phylogenetic implications. Molecular Phylogenetic and Evolution16:48-63.
  4. Drehmel D, Moncalvo J-M, & Vilgalys R. (1999). Molecular phylogeny of Amanita based on large subunit ribosomal DNA sequences: implications for taxonomy and character evolution. Mycologia91:610-618
  5. 1 2 Kuo, M. (2008, March). Amanita farinosa. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/amanita_farinosa.html

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The Agaricales are an order of fungi in the division Basidiomycota. As originally conceived, the order contained all the agarics, but subsequent research has shown that not all agarics are closely related and some belong in other orders, such as the Russulales and Boletales. Conversely, DNA research has also shown that many non-agarics, including some of the clavarioid fungi and gasteroid fungi belong within the Agaricales. The order has 46 extant families, more than 400 genera, and over 25,000 described species, along with six extinct genera known only from the fossil record. Species in the Agaricales range from the familiar Agaricus bisporus and the deadly Amanita virosa to the coral-like Clavaria zollingeri and bracket-like Fistulina hepatica.

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