Amanita farinosa

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Amanita farinosa

Amanita farinosa
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Homobasidiomycetae
Subclass:	Hymenomycetes
Order:	Agaricales
Family:	Amanitaceae
Genus:	Amanita
Species:	A. farinosa
Binomial name
*Amanita farinosa* (Schw.)

Amanita farinosa
Mycological characteristics
	gills on hymenium
	cap is flat or convex
	hymenium is free
	stipe is bare
	spore print is white
	ecology is mycorrhizal
	edibility: poisonous

Amanita farinosa, also called Eastern American Floury Amanita, is a North American poisonous mushroom of the genus Amanita, a genus of fungi including some of the most deadly mushrooms, as well as notably psychedelic mushrooms.

Contents

1 Taxonomy
2 Physical description
3 Distribution and habitat
4 See also
5 Footnotes

Taxonomy

Two recent molecular studies show that Amanita farinosa is part of a subgroup within Amanita with its close relatives the Fly Agaric (Amanita muscaria), A. gemmata and A. roseotincta^[1]^[2].

Physical description

Cap : The cap is 2.5–7 cm (1-2.8 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.

Gills : The gills are white. They may be attached to the stem or free. They are close and crowded and not bruising.

Stem/Stipe : 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, 1-3 centimeters thick. The stem is white to tan in color^[3].

Spores and microscopic features : The spores are white. They are 5.5-8 x 6-8 µ in measurement and inamyloid. The spores are smooth and round to broadly elliptical.

Flesh : The flesh is white in color. It doesn't stain on exposure^[3].

Odor : 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.

Footnotes

^ 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 Evolution 16:48-63.
^ 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. Mycologia 91:610-618
^ ^a ^b Kuo, M. (2008, March). Amanita farinosa. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/amanita_farinosa.html

Amanita species

Subgenus Amanita

Section Amanita	A. altipes • A. armeniaca • A. farinosa • A. frostiana • A. gemmata • A. muscaria • A. nehuta • A. pantherina • A. parvipantherina • A. regalis • A. rubrovolvata • A. virgineoides • A. xanthocephala

Section Vaginatae	A. ceciliae • A. crocea • A. fulva • A. liquii • A. nivalis • A. orientifulva • A. pachycolea • A. pekeoides • A. umbrinolutea • A. vaginata • A. velosa

Section Caesareae	A. basii • A. caesarea • A. chepangiana • A. hemibapha • A. jacksonii • A. lanei • A. spreta • A. zambiana

Subgenus Lepidella

Section Lepidella	A. abrupta • A. atkinsoniana • A. austroviridis • A. ananaeceps • A. cokeri • A. daucipes • A. magniverrucata • A. nauseosa • A. onusta • A. ravenelii • A. smithiana • A. solitaria • A. thiersii • A. vittadinii

Section Amidella	A. ovoidea • A. volvata

Section Phalloideae	A. arocheae • A. bisporigera • A. exitialis • A. magnivelaris • A. marmorata subsp. myrtacearum • A. manginiana • A. ocreata • A. pseudoporphyria • A. phalloides • A. subjunquillea • A. verna • A. virosa • A. virosiformis

Section Validae	A. aestivalis • A. australis • A. brunnescens • A. citrina • A. excelsa v. spissa • A. flavella • A. flavoconia • A. flavorubens • A. franchetii • A. nothofagi • A. novinupta • A. porphyria • A. rubescens

Poisoning from Amanitas

sect.
Amanita

Species	A. albocreata • A. crenulata • A. farinosa • A. frostiana • A. gemmata • A. multisquamosa • A. muscaria • A. pantherina • A. porphyria • A. regalis • A. strobiliformis • A. xanthocephala

Compounds	Toxins: Ibotenic Acid • Muscimol Other compounds: Muscarine • Muscazone • Amavadine

sect.
Phalloidea

Species

Destroying angels	A. bisporigera • A. exitialis • A. magnivelaris • A. ocreata • A. verna • A. virosa • A. virosiformis

Other members	A. arocheae • A. phalloides • A. subjunquilea

Compounds

Amatoxins	Amanitins (alpha- • beta- • gamma- • epsilon-) • Amanullin • Amanullinic acid • Amaninamide • Amanin • Proamanullin

Phallotoxins	Phallacidin • Phallacin • Phallisacin • Phallisin • Phalloidin • Phalloin • Prophalloin

Other compounds	Antamanide • Phallolysin • Toxophallin

sect.
Lepidella

Species	A. abrupta • A. nauseosa • A. proxima • A. smithiana • A. sphaerobulbosa • A. thiersii

Compounds	Allenic norleucine (2-amino-4,5-hexadienoic acid) • Propargylglycine

sect.
Validae

Species	A. rubescens (A. amerirubescens nom. prov.)

Compounds	Rubescenslysin

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