Maryland Biodiversity Project - Inky Mushroom (Agaricus placomyces)

Inky Mushroom Agaricus placomyces Wasser

Kingdom Fungi > Phylum Basidiomycota > Class Agaricomycetes > Order Agaricales > Family Agaricaceae > Genus Agaricus Inky Mushroom - Agaricus placomyces - https://www.marylandbiodiversity.com/view/4979

Status:

Scattered or groups in hardwood forests, grassy areas with trees, and on sawdust piles.

Description:

White cap with tiny grayish-brown scales; unpleasant odor. Gills white but rapidly becoming pink, then rose, and dark brown with age; crowded; white membranous veil covers young gills. Stalk white, flesh in base stains yellow, abruptly bulbous base. Ring on stalk has cottony patches on underside (J. Solem, pers. comm.).

Records:

There are 37 records in the project database.

Links:

View taxon at MycoBank

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Seasonality:

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<em>Agaricus placomyces</em> (fruiting body) in Howard Co., Maryland (9/26/2011). (Photo ID: 9789 - Psn: 30)

Agaricus placomyces (fruiting body) in Howard Co., Maryland (9/26/2011). Photo by Robert Solem. (MBP list)

<em>Agaricus placomyces</em> (gills, ring, and bulb) in Howard Co., Maryland (9/26/2011). (Photo ID: 9790 - Psn: 34)

Agaricus placomyces (gills, ring, and bulb) in Howard Co., Maryland (9/26/2011). Photo by Robert Solem. (MBP list)

<em>Agaricus placomyces</em> growing in Montgomery Co., Maryland (7/26/2018). Determined by Jo Solem. (Photo ID: 123184 - Psn: 38)

Agaricus placomyces growing in Montgomery Co., Maryland (7/26/2018). Determined by Jo Solem. Photo by Anne Looker. (MBP list)

<em>Agaricus placomyces</em> in Howard Co., Maryland (9/26/2011). (c) Joanne and Robert Solem, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 221242 - Psn: 50)

Agaricus placomyces in Howard Co., Maryland (9/26/2011). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Spores from a specimen of <em>Agaricus placomyces</em> in Howard Co., Maryland (9/26/2011). (c) Joanne and Robert Solem, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 221243 - Psn: 55)

Spores from a specimen of Agaricus placomyces in Howard Co., Maryland (9/26/2011). (c) Joanne and Robert Solem, some rights reserved (CC BY-NC). Photo by Joanne Solem. (MBP list)

Spores from a specimen of <em>Agaricus placomyces</em> collected in Howard Co., Maryland (9/26/2011). Oval to elliptic, smooth, hyaline; measured 4.5-5.3 X 3.3-3.6 microns. (Photo ID: 9791 - Psn: 100)

Spores from a specimen of Agaricus placomyces collected in Howard Co., Maryland (9/26/2011). Oval to elliptic, smooth, hyaline; measured 4.5-5.3 X 3.3-3.6 microns. Photo by Robert Solem. (MBP list)

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