Oyster Mushroom Pleurotus ostreatus (Jacquin) Kummer    
Kingdom Fungi   >   Phylum Basidiomycota   >   Class Agaricomycetes   >   Order Agaricales   >   Family Pleurotaceae   >   Genus Pleurotus   

Status:

Found in overlapping clusters, usually on hardwood trees, logs, and stumps.

Description:

Cap: varies from white to dark brown, smooth, dry, slightly convex to shell-shaped, margin inrolled; flesh white, firm. Gills: White to cream, decurrent, usually close. Stalk: Off-center when present. (J. Solem, pers. comm.)

There are 201 records in the project database.

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Oyster Mushroom in Caroline Co., Maryland (7/25/2014). Photo by Kathy Calvert. (MBP list)

Oyster Mushroom in Baltimore Co., Maryland (1/26/2020). Photo by Emilio Concari. (MBP list)

An Oyster Mushroom in Worcester Co., Maryland (1/17/2014). Photo by Lance Biechele. (MBP list)

Oyster Mushroom in Carroll Co., Maryland (1/15/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Oyster Mushroom in Carroll Co., Maryland (1/15/2021). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Oyster Mushroom growing in Prince George's Co., Maryland (9/16/2018). Determined by Jo Solem. Photo by Anne Looker. (MBP list)

Oyster Mushrooms in Harford Co., Maryland (1/2/2020). Photo by Emilio Concari. (MBP list)

Oyster Mushroom in Carroll Co., Maryland (11/24/2020). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat via iNaturalist. (MBP list)

Oyster Mushroom in Carroll Co., Maryland (11/24/2020). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat via iNaturalist. (MBP list)

An Oyster Mushroom (gills) in Howard Co., Maryland (11/1/2013). Photo by Joanne Solem. (MBP list)

Oyster Mushroom in Harford Co., Maryland (1/2/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Oyster Mushroom in Harford Co., Maryland (1/2/2020). (c) Emilio Concari, some rights reserved (CC BY-NC). Photo by Emilio Concari. (MBP list)

Oyster Mushroom growing in Montgomery Co., Maryland (7/13/2018). Determined by Jo and Bob Solem. Photo by Anne Looker. (MBP list)

Oyster Mushroom in Montgomery Co., Maryland (10/10/2018). Determined by Jo Solem/BugGuide. Photo by Anne Looker. (MBP list)

Oyster Mushroom in Montgomery Co., Maryland (10/10/2018). Determined by Jo Solem. Photo by Anne Looker. (MBP list)

Oyster Mushroom in Anne Arundel Co., Maryland (10/31/2019). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat via iNaturalist. (MBP list)

Oyster Mushroom in Montgomery Co., Maryland (5/4/2020). (c) Laura Hatmaker, some rights reserved (CC BY-NC). Photo by Laura Hatmaker via iNaturalist. (MBP list)

Oyster Mushroom in Baltimore Co., Maryland (11/1/2019). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat via iNaturalist. (MBP list)

Spores collected from an Oyster Mushroom specimen in Howard Co., Maryland (7/10/2014). Cylindrical, smooth; measured 7.7-8.5 X 3.5-3.9 microns. Photo by Robert Solem. (MBP list)

Oyster Mushroom in Prince George's Co., Maryland (1/3/2020). (c) baboomom, some rights reserved (CC BY-NC). Photo by baboomom via iNaturalist. (MBP list)


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Eating mushrooms can be dangerous. One should do so only with expert advice and great care. MBP accepts no liability for injury sustained in consuming fungi or other biodiversity.