View source for Amanita crenulata

{{short description|Toxic species of mushroom}}

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{{Taxobox
| image              = Amanita crenulata.jpg
| caption            = 
| regnum             = [[Fungi]]
| divisio            = [[Basidiomycota]]
| classis            = [[Agaricomycetes]]
| ordo               = [[Agaricales]]
| familia            = [[Amanitaceae]]
| genus              = ''[[Amanita]]''
| species            = '''''A. crenulata'''''
| binomial           = ''Amanita crenulata''
| binomial_authority = [[Charles Horton Peck|Peck]] (1900a)
}}
{{Mycomorphbox
| name            = Amanita ''crenulata''
| whichGills      = narrowly adnate
| capShape        = flat
| hymeniumType    = gills
| stipeCharacter  = ring
| ecologicalType  = mycorrhizal
| sporePrintColor = white
| howEdible       = poisonous
| howEdible2      = psychoactive
}}
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'''''Amanita crenulata''''', also known as the '''poison champagne amanita''' is a species of [[fungus]] that is very common in the [[Northeast]] United States.

==Description==
*'''Cap''': 2 – 9&nbsp;cm wide, hemispheric at first, then becoming flatter. Pale tan, sometimes grayish or yellowish. The volva is distributed over the wide cap as powdery, somewhat paler warts. The color of the warts lends the mushroom the name "champagne."
*'''Gills''': narrowly adnate, close to subcrowded, and white to cream. The short gills are truncate to subtruncate or (occasionally) subattenuate.<ref name=AmOrg>[http://www.amanitaceae.org/?Amanita+crenulata Amanita crenulata at amanitaceae.org] Accessed Sep 2019</ref>
*'''Stipe''': The stipe is 17 - 100 × 3.5 - 16&nbsp;mm and has a skirt-like annulus that is often quickly lost or left in torn fragments on the pileus margin. The notable bulb usually bears a distinct ring of champagne volval powder on its "shoulder."<ref name=AmOrg/>
*'''Odour''': Not distinct.

It is an [[Mycorrhiza|ectomycorrhizal]] fungus, living in root [[symbiosis]] with a tree.

==Biochemistry==
''Amanita crenulata'' when ingested can produce symptoms associated with [[ibotenic acid]]/[[muscimol]] intoxication.
<ref name=Tulloss>https://www.researchgate.net/publication/288840004_Amanita_crenulata_a_common_poisonous_misunderstood_mushroom p.1</ref>

==See also==
{{Portal|Fungi}}
*[[List of Amanita species|List of ''Amanita'' species]]

==References==
{{Reflist}}

==External links==
* [http://www.amanitaceae.org/?Amanita+crenulata Amanita crenulata at amanitaceae.org]
* [https://www.mushroomthejournal.com/powdery-amanitas-subsection-farinosae/ Powdery Amanitas, at mushroomthejournal.com]
* [https://www.researchgate.net/publication/288840004_Amanita_crenulata_a_common_poisonous_misunderstood_mushroom "Amanita crenulata, a common, poisonous, misunderstood mushroom," R. Tulloss, 1990, accessed Sep. 2019]

{{Amanitas}}
{{Poisonous Amanitas}}

[[Category:Amanita|crenulata]]
[[Category:Fungi of North America]]
[[Category:Poisonous fungi]]
[[Category:Psychoactive fungi]]
[[Category:Fungi described in 1900]]


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