FloraFinder.com
Home   About Us   Want to Help?   FAQ  
Adv Search   Image Use Biblio

Amanita muscaria

 

Fly Agaric

About plant names...

Why would a mushroom be named “fly agaric”? I couldn’t find a clear answer to this, but “fly” could refer to its historical use as a fly killer, since it contains ibotenic acid. Or it could refer to the delirium it induces if eaten. “Agaric” roughly translates to “mushroom”—it refers to a fungal fruiting body that has a cap that is clearly differentiated from the stalk, with gills on the underside of the cap. In any case, Amanita is attractive, common, and dangerous. Amanitas are the iconic toadstool, or poisonous mushroom.

Identification: Caps are red (or orange or yellow) with white spots, 2-15" (6-39 cm) in diameter, and can reach 12" (30 cm) in height. There are many varieties of Amanitas—for a detailed key, see Michael Kuo’s at mushroomexpert.com.

Edibility: Poisonous Skull & Crossbones Fatalities from eating these mushrooms are not as common as once believed, but they nevertheless cause a wide range of unpredictable symptoms. From Wikipedia:

... Depending on habitat and the amount ingested per body weight, effects can range from nausea and twitching to drowsiness, cholinergic crisis-like effects (low blood pressure, sweating and salivation), auditory and visual distortions, mood changes, euphoria, relaxation, ataxia, and loss of equilibrium.

That’s if the effects are mild. Seizures, coma, and death can occur with stronger doses. The effects of a given dose vary enormously from person to person. There is no antidote. Despite the risks, many earlier peoples have consumed it for its psychoactive effects, a practice that continues to a limited extent even today.

Online References:

Amanita muscaria on Mykoweb.com: the Fungi of California

Amanita muscaria on Tom Volk's Fungi site, at the Department of Biology at the University of Wisconsin

Amanita muscaria on Michael Kuo's MushroomExpert.com

Amanita muscaria on Wikipedia

Amanita muscaria on RogersMushrooms.com

Amanita muscaria description by Thomas H. Kent, last updated 19 Feb 2012.

© FloraFinder.com. All rights reserved.


 

Amanita muscaria (Fly Agaric)

9/25/2011 · Nashua River Rail Trail, Groton Ctr, Goroton, MA
≈ 9 × 6" (23 × 15 cm)

Amanita muscaria (Fly Agaric)

8/19/2004 · Haleakula, Maui, HI

Amanita muscaria (Fly Agaric)

7/19/2009 · Mt. Monadnock, NH
≈ 1¾ × 1½" (4.7 × 4 cm)

Amanita muscaria (Fly Agaric)

10/16/2011 · Nashua River Rail Trail, Groton Ctr, Groton, MA
≈ 5 × 6" (13 × 14 cm)

Amanita muscaria (Fly Agaric)

9/25/2011 · Nashua River Rail Trail, Groton Ctr, Goroton, MA
≈ 11 × 7" (27 × 18 cm)

Amanita muscaria (Fly Agaric)

9/26/2011 · Pearl Hill State Park, Townsend, MA
≈ 4 × 4½" (11 × 12 cm)