Name: Amanita muscaria var. guessowii Veselý nom. inval.
Most Confident Observations:
Copyright © 2011 Hamilton (ham)
Copyright © 2013 Eva Skific (Evica)
Copyright © 2012 Jimmie Veitch (jimmiev)
Copyright © 2011 vjp
Version: 9
Previous Version 

First person to use this name on MO: Debbie Viess
Editors: R. E. Tulloss, Erlon, Joseph D. Cohen


Domain: Eukarya

Kingdom: Fungi

Phylum: Basidiomycota

Class: Agaricomycetes

Order: Agaricales

Family: Amanitaceae

Genus: Amanita

Species: Amanita muscaria

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Notes on Taxonomy: [Edit]

Typification Details:
Typification: type not indicated


Brief Description:


The cap is 4.5–16 (18) cm wide, convex, and becomes broadly convex to flat in age. It is bright yellow or yellow-orange, usually more orange or reddish orange towards the disc, and fading to pale yellow. The volva is distributed over the cap as cream to pale tan warts; it is otherwise smooth and sticky when wet. The margin becomes slightly striate in age. The flesh is white and it does not stain when cut or injured.

The gills are free to narrowly adnate, subcrowded to crowded, cream to pale cream, truncate, unevenly distributed, of diverse lengths, and plentiful.

Amanita muscaria var. guessowii spores are white in deposit, broadly ellipsoid to ellipsoid (infrequently subglobose or elongate) and inamyloid. The spores are (7.0–) 8.7-12.2 (-14.8) x (5.9) 6.5–8.2 (9.5) µm.

The stipe is (4)6 –15 x 1–3 cm, more or less equal or narrowing upwards and slightly flaring at the apex. It is white to yellowish cream, densely stuffed with a pith, the skirtlike ring is membranous, persistent, the lower stipe and upper bulb are decorated with partial or complete concentric rings of volval material that are bright pale yellow to cream or sordid cream.

Descriptions: [Create]


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By: I. G. Safonov (IGSafonov)
2019-01-03 12:18:34 PST (-0800)

is this nom. inval.? Can anyone explain, please?

Created: 2008-07-30 15:50:31 PDT (-0700) by Debbie Viess (amanitarita)
Last modified: 2019-01-03 12:18:34 PST (-0800) by Joseph D. Cohen (Joe Cohen)
Viewed: 2455 times, last viewed: 2019-04-15 13:05:57 PDT (-0700)
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