oyster mushroom

American  

noun

1. oyster cap.

---

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

---

Etymology

Origin of oyster mushroom

First recorded in 1870–75

Example Sentences

See Examples For:

oyster mushroom

"We want to remind growers that not all cultivated fungi stay where we put them. Once released outdoors, even accidentally, the golden oyster mushroom can spread quickly and outcompete native species," said Jusino.

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

“Somebody sees this thing and they think it looks wild and extraterrestrial,” she said, “but it’s a pink oyster mushroom that cooks beautifully into something that tastes like barbecue pork.”

From Washington Post ● Apr. 13, 2023

Here are Mueller’s recommendations for expanding your oyster mushroom kit into two or three kits to grow at home:

From Los Angeles Times ● Feb. 1, 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