Name: Agaricus amicosus Kerrigan
Most Confident Observations:
Copyright © 2011 Jeff Riedenauer (Tamsenite)
Copyright © 2015 Debbie Viess (amanitarita)
Copyright © 2013 Patrick Harvey (pg_harvey)
Copyright © 2013 Dave W (Dave W)
Version: 3
Previous Version 

First person to use this name on MO: Nathan Wilson
Editors: Peter G Werner, walt sturgeon


Rank: Species

Status: Accepted

Name: Agaricus amicosus

ICN Identifier: missing

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Author: Kerrigan

Citation: Mycotaxon 34(1): 120-124 (1989)


Domain: Eukarya

Kingdom: Fungi

Phylum: Basidiomycota

Class: Agaricomycetes

Order: Agaricales

Family: Agaricaceae

Genus: Agaricus

Notes on Taxonomy: [Edit] Brief Description: [See More | Edit]

Cap: 7-18 cm; convex or blocky at first, becoming broadly convex; dry; whitish underneath brown, pressed-down fibers that remain tightly affixed or become aggregated into small scales; often bruising reddish.

Gills: Free from the stem; close; pink when young, often bruising reddish; later dark chocolate brown to blackish; covered when in the button stage with a whitish to brownish partial veil.

Stem: 4-12 cm long; up to 3 cm thick; more or less equal above a slightly to moderately swollen base; with a skirtlike, whitish to brownish ring; whitish; bruising reddish orange; fairly smooth; base sheathed in whitish to brownish veil material.

Flesh: White; changing to reddish or brownish red when sliced.

Odor and Taste: Odor not distinctive or sweet and fruity; taste similar.

Chemical Reactions: Cap surface sometimes (but not always) yellow with KOH.

Spore Print: Dark chocolate brown.

Microscopic Features: Spores: 5-8 × 4.5-6 µ; elliptical. Cheilocystidia up to 30 × 12 µ; clavate to cylindric.

Descriptions: [Create]


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