oyster mushroom

American  

noun

1. oyster cap.

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oyster mushroom British  

noun

1. an edible fungus, Pleurotus ostreatus, having an oyster-shaped cap, commonly found growing in clusters on the trunks of broad-leaved trees

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Etymology

Origin of oyster mushroom

First recorded in 1870–75

Example Sentences

Although it is an attractive and edible species, the golden oyster mushroom has demonstrated its ability to escape cultivation and establish itself in the wild, where it can outcompete native fungi.

From Science Daily • Apr. 24, 2026

The oyster mushroom produces chemicals to paralyze its nematode prey within a few minutes of contact.

From National Geographic • Dec. 12, 2023

The pita bread was thick, warm and fluffy, and the fried oyster mushroom had a texture similar to fried onions, topped with sliced cucumbers, pickled onions, shredded lettuce and a generous drizzling of aji amarillo.

From Los Angeles Times • Apr. 18, 2023

Furthermore, the oyster mushroom only goes to the trouble to make toxocysts when it is in a nitrogen-poor environment.

From New York Times • Jan. 18, 2023

The oyster mushroom is found from March to December and is always a very acceptable mushroom.

From The Mushroom, Edible and Otherwise Its Habitat and its Time of Growth by Hard, Miron Elisha