Amanita muscaria (L. : Fr.) Lam. var. muscaria
"Euro-Asian Fly Agaric"

Amanita muscaria (L.:Fr.) Lam. var. muscaria - Aigas Field Station, Highlands and Islands Region, Scotland
Amanita muscaria (L.:Fr.) Lam. var. muscaria - Culbin Sands, Highlands and Islands Region, Scotland
Amanita muscaria (L.:Fr.) Lam. var. muscaria - Germany, Z. L. Yang

Technical description not yet available.

BRIEF DESCRIPTION: Amanita muscaria is the common, bright red fly agaric of northern Europe and Asia. Its orange-red to scarlet cap is 90 - 145 mm wide. The volva is distributed over the cap as white or yellow warts.

The gills are free to narrowly adnate, crowded to subcrowded, and white or whitish both in mass and in side view. The short gills are truncate.

The stipe is 60 - 210 x 8 - 22 mm and has a skirt-like annulus and notable bulb of rather variable shape (up to 46 x 45 mm). Rings of volval material commonly encircle the top of the bulb and the base of the stipe.

The spores measure (7.4-) 8.5 - 11.5 (-13.1) x (5.6-) 6.5 - 8.5 (-9.8) µm and are broadly ellipsoid (infrequently subglobose or elongate) and inamyloid. Clamps are very common at bases of basidia.

Because yellow warts are not uncommon in the type variety, microscopic characters must be used to distinguish it from the American Amanita muscaria subsp. flavivolvata Singer. The species is toxic and is well-known for its use by shamans of Amanita muscaria var. muscaria occurring among dwarf willow (Salix repens) on the Island of Terschelling - photo by Dr. C. Bas. northern cultures.  Amanita muscaria occurs throughout Europe and northern Asia (famously in Siberia) and in western Alaska. It is one of the amanitas that is most easily (and frequently) introduced with imported trees -- e.g., in pine and eucalypt plantations. It appears to be able to take on many genera of plants as ectomycorrhizal symbionts.

Other apparently closely related taxa include A. breckonii Ammirati & Thiers, A. gioiosa Curreli, A. heterochroma Curreli, the varieties of the present species, and A. regalis (Fr.) Michael. All of these species have easily-found clamps at bases of the basidia. A number of them are also quite unusual in Amanita in that tissues from them will rapidly and robustly produce a vegetative culture.

The species is associated primarily with Birch and diverse conifers in Eurasia, but has been found in mixed forest with other deciduous trees, in forests of pure Tilia (in Norway), with dwarf willow (Salix repens) on the Island of Terschelling (Prov. Friesland, the Netherlands, see photo above at right), in Empetrum-Salix heath at 71 ° lat. in Norway (see photo above at left), and adapted to living with eucalypts in Australia, Argentina, etc.. and adapted to living with Nothofagus in New Zealand.  In Australia and New Zealand, the species is considered invasive.  -- R. E. Tulloss

Photos: R. E. Tulloss (first two rows above text, Scotland)
Photo: Z. L. Yang (last row above text, Germany)
Photo: courtesy Dr. C. Bas (at right by last paragraphs, the Netherlands)
Photo: courtesy Dr. Andrus Voitk (at left by last paragraphs, Norway)

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Last changed 14 September 2007.
This page maintained by
R. E. Tulloss
Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 by Rodham E. Tulloss.
Photographs copyright 2000, 2003 Rodham E. Tulloss.
Photograph copyright 2004 by Dr. Cornelis Bas
Photograph copyright 2007 by Dr. Zhu Liang Yang.