|California Fungi—Agaricus campestris
(Photo: © Fred Stevens)
Syst. Mycol. 1: 281. 1821.
meadow mushroom, champignon
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.
Gills close, free, pink, becoming blackish-brown at maturity.
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 5.5-8.0 x 3.5-5 µm, elliptical, smooth; spore print blackish-brown.
Scattered or forming arcs and rings in grassy areas; fruiting from late summer in watered areas to early fall; often found with
(Man on Horseback),
(Horse Mushroom) and
Edible, of good flavor, but lacking the solid texture of an
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.
are similar, also occur in grass, often more commonly, but are distinguished by their phenolic odor, yellowing when bruised (rapid in
, faint and slow in
), different veil and stipe (see Comments under these species). A third grassland
(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,
, with which the Meadow Mushroom sometimes fruits, is a close look-alike, but can be distinguished by its white gills and spores.
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.
(1986). The Agaricales (Gilled Fungi) of California. 6. Agaricaceae. Mad River Press: Eureka, CA. 62 p.
of North America. New York Botanical Garden: Bronx, NY. 574 p.
(2008). Agaricus L.; Allopsalliota Nauta & Bas; Tribu Agariceae S. Imai: Part 1. Edizioni Candusso: Alassio, Italy. 824 p.
(1949). Mushrooms in their Natural Habitats. Sawyer's Inc: Portland, OR. 626 p.
Other Descriptions and Photos
Hunter Angler Gardener Cook:
Tickled by Pinks
(D & CP)
Pilze, Pilze, Pilze:
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
: 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