Wood Ear (Tree Ear)

Media
Photo of wood ear mushroom, which looks like a brownish human ear stuck to a log
Safety Concerns
Name
Edible
Scientific Name
Auricularia auricula (formerly A. auricula-judae)
Family
Auriculaceae
Description

Reddish brown to grayish black; rubbery; earlike or cup-shaped. Usually in groups on rotting wood. May–November. Fruiting body earlike or cup-shaped; upper surface reddish brown to grayish to blackish, smooth, wavy; underside often lighter than the upper surface; silky or finely hairy, irregularly veined; flesh thin and rubbery. Spore print white. Spores magnified are sausage-shaped, smooth, colorless.

Lookalikes: The wood ear could be confused with a cup fungus except that it is rubbery, not brittle like many cup fungi, and it grows in many irregular shapes.

Size
Fruiting body width: 1–6 inches.
Where To Find
iage of Wood Ear Tree Ear distribution map
Statewide.
The wood ear usually grows in groups on rotting wood. It is very common.
Considered an edible and medicinal mushroom. A closely related species is cultivated in Asia and can be found in the United States in Asian markets. In Chinese, its name is "Hei mu-er." You may have eaten it in Chinese hot and sour soup.
Life Cycle
This species exists as a network of fungal cells (mycelium) within rotting wood. The mycelium obtains nourishment by digesting, and rotting, the wood. When ready to reproduce, the mycelium develops the "fruiting body" outside the wood, which is the reproductive structure. Spores are produced on the underside surfaces of the "ears"; they are released to begin new mycelia elsewhere.
The wood ear has been reported to positively affect blood coagulation and decrease blood cholesterol levels. Since it is a popular edible mushroom in China, it may contribute to the low incidence of heart disease there.
This is one of the many fungus species that live on decaying wood. It and other such saprobic fungi play an incredibly important role in breaking down the tough materials in wood and returning those nutrients to the soil.
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About Mushrooms in Missouri

Mushrooms are a lot like plants, but they lack chlorophyll and have to take nutrients from other materials. Mushrooms are neither plants nor animals. They are in a different kingdom — the fungi. Fungi include the familiar mushroom-forming species, plus the yeasts, molds, smuts, and rusts.

Always be cautious when eating edible mushrooms. Be absolutely sure of the ID, and only eat a small amount the first time you try it to avoid a reaction..