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Agaricus campestris L.
Life   Fungi   Basidiomycota   Agaricaceae   Agaricus

Agaricus campestris var campestris
© Copyright Malcolm Storey 2011-2118 · 10
Agaricus campestris var campestris

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Agaricus campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris
Agaricus campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris

Agaricus campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris
Agaricus campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris

Agaricus campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris
Agaricus campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris

Agaricus campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris
Agaricus campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris

Agaricus campestris var campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris var campestris
Agaricus campestris var campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris var campestris

Agaricus campestris var campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris var campestris
Agaricus campestris var campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris var campestris

Agaricus campestris var campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris var campestris
Agaricus campestris var campestris
© Copyright Malcolm Storey 2011-2118 · 3
Agaricus campestris var campestris

Hosts · map
FamilyScientific name @ source (records)
Myrtaceae  Eucalyptus sp @ BPI (1)
_  Substrate @ BPI (107)

Associates · map
FamilyScientific name @ source (records)
Hypocreaceae  Hypomyces rosellus @ BPI (1)

Mycogone perniciosa @ BPI (15)

Mycogone rosea @ BPI (1)
Myxotrichaceae  Malbranchea @ BPI (1)
Plectosphaerellaceae  Verticillium malthousei @ BPI (1)

Verticillium @ BPI (3)
_  Illosporium maculicola @ BPI (1)

Myceliophthora lutea @ BPI (1)

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California Fungi—Agaricus campestris Agaricus campestris
(Photo: © Fred Stevens)

Agaricus campestris Linnaeus: Fries
Syst. Mycol. 1: 281. 1821.

Common Name: meadow mushroom, champignon

  • Pileus

    Cap 5-10 cm broad, convex, broadly convex in age, often with a low umbo; margin incurved, decurved to occasionally upturned in senescent specimens; surface dry, smooth, fibrillose to finely scaled in dry weather; color: white to ashy-grey; context white, thick, unchanging when bruised or in KOH; odor and taste mild.

  • Lamellae

    Gills close, free, pink, becoming blackish-brown at maturity.

  • Stipe

    Stipe 3-6 cm long, 1-2 cm thick, tapering to a pointed base, stuffed; veil thin, membranous, fragile, either leaving remnants on the young cap margin or forming a median to superior, evanescent ring.

  • Spores

    Spores 5.5-8.0 x 3.5-5 µm, elliptical, smooth; spore print blackish-brown.

  • Habitat

    Scattered or forming arcs and rings in grassy areas; fruiting from late summer in watered areas to early fall; often found with Leucoagaricus naucinus (Man on Horseback), Marasmius oreades (Fairy-Ring Mushroom), A. arvensis (Horse Mushroom) and A. californicus .

  • Edibility

    Edible Edible, of good flavor, but lacking the solid texture of an Agaricus bitorquis .

  • Comments

    The Meadow Mushroom is recognized by its grassland habit, short stature, stark, white cap, fragile, evanescent ring, pointed stipe base, and lack of staining reactions. Agaricus californicus and A. xanthodermus are similar, also occur in grass, often more commonly, but are distinguished by their phenolic odor, yellowing when bruised (rapid in A. xanthodermus , faint and slow in A. californicus ), different veil and stipe (see Comments under these species). A third grassland Agaricus , Agaricus arvensis (Horse Mushroom), bruises yellow slowly, has a sweet anise odor, a well developed veil with buff-colored patches on the lower surface, and a usually enlarged, not narrowed stipe base. Finally, Leucoagaricus naucinus , with which the Meadow Mushroom sometimes fruits, is a close look-alike, but can be distinguished by its white gills and spores.

  • References

    Breitenbach, J. & Kränzlin, F. (1995). Fungi of Switzerland. Volume 4: Agarics (2nd Part). Entolomataceae, Pluteaceae, Amanitaceae, Agaricaceae, Coprinaceae, Strophariaceae. Verlag Mykologia: Luzern, Switzerland. 368 p.
    Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
    Kerrigan, R.W. (1986). The Agaricales (Gilled Fungi) of California. 6. Agaricaceae. Mad River Press: Eureka, CA. 62 p.
    Kerrigan, R.W. (2016). Agaricus of North America. New York Botanical Garden: Bronx, NY. 574 p.
    Sánchez, L.A.P. (2008). Agaricus L.; Allopsalliota Nauta & Bas; Tribu Agariceae S. Imai: Part 1. Edizioni Candusso: Alassio, Italy. 824 p.
    Smith, A.H. (1949). Mushrooms in their Natural Habitats. Sawyer's Inc: Portland, OR. 626 p.

  • Other Descriptions and Photos Main Photo
    • Hunter Angler Gardener Cook: Tickled by Pinks
    • Robert Rich: Agaricus campestris (D & CP)
    • Pilze, Pilze, Pilze: Agaricus campestris (CP)
    • Arora (1986): p. 318 (D), plate 71
    • Arora (1991): p. 113 (D & CP)
    • Fischer & Bessette: p. 37 (D & CP)
    • Jordan: p. 223 (D & CP)
    • Kerrigan: p. 25 (D & CP)
    • Lincoff: p. 505 (D), plates 153, 154
    • McKenny et al. : p. 144 (D), p. 145 (CP)
    • Miller: sp. 214 (D & CP)
    • Phillips: p. 188 (D), p. 189 (CP)
    • Smith: sp. 170 (D & CP)
    • Smith & Weber: sp. 168 (D & CP)

    (D=Description; I=Illustration; P=Photo; CP=Color Photo)

The Fungi of California
Copyright © 1996-2018 Michael Wood & Fred Stevens
A MykoWeb Page

Following modified from Taiwan Biodiversity National Information Network
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Kingdom Fungi  
 Phylum Basidiomycota  
 Class Basidiomycetes  
 Order Agaricales  
 Family Agaricaceae  
 Genus Agaricus  
  Agaricus campestris    L.:Fr 
Provider: Chou, Wen-Neng 
hierarchy tree    download xml    download txt    Chinese Page    
Synonyms: Agaricus bisporus Agaricus bisporus albidus Agaricus bisporus avellaneus Agaricus bisporus bisporus Agaricus bisporus hortensis Agaricus brunnescens Agaricus campestris bisporus Agaricus campestris hortensis Agaricus cookeanus Agaricus hortensis Agaricus subfloccosus bisporus details
Citation: Hou, H.H. & Wu, L. C.:中國園藝 17(1) :7, 1971
Name Code: 143078
  
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