Public Description of Agaricus bisporus (J.E. Lange) Imbach

Title: Public Description (Default)
Name: Agaricus bisporus (J.E. Lange) Imbach
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Description status: Unreviewed

Taxonomic Classification:

Domain: Eukarya
Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Agaricaceae

General Description:

“CAP 4.5-7.5 cm broad, dry red-brown or cinnamon-brown scales on flesh color ground. GILLS close to crowded, pallid then rosy pink. STEM 7-10 cm long, 1.1-1.8 cm thick, equal, flat rounded marginate bulb. RING white, narrow, felty, undersurface wide toothed flaps that separate from the surface and point down the stem. HABITAT cultivated or manure rich ground.”1

Diagnostic Description:

Agaricus bisporus … can be recognized by the following combination of characters: relatively short stature, cap with pale brown appressed scales, flesh which bruises slowly orange-brown to reddish- brown, but does not stain yellow in KOH, a well developed ring, smooth stipe, and a preference for fruiting with Monterey cypress. Agaricus californicus and A. xanthodermus also occur under Monterey Cypress but the latter bruises bright yellow on the cap margin and stipe base, while the former, though similar in stature, has a distinctive double-lipped ring (best seen in fresh, young material), and stains yellow in KOH. Agaricus bisporus is sometimes also confused with A. campestris, the Meadow Mushroom, but the latter grows in grass, usually away from trees, lacks the brown cap scales of A. bisporus, has an evanescent ring, and a tapered stipe base.”2


Close to manure

Look Alikes:

Edible and the most cultivated mushroom in the USA.


Description author: Joseph D. Cohen (Request Authorship Credit)

Created: 2014-01-12 23:37:01 CST (-0500) by Joseph D. Cohen (Joe Cohen)
Last modified: 2016-04-30 18:57:47 CDT (-0400) by Joseph D. Cohen (Joe Cohen)
Viewed: 39 times, last viewed: 2020-06-22 18:02:41 CDT (-0400)