Where’s Wildlife · Mushroom Field Guide

Dead Man’s Fingers

Xylaria polymorpha group

Pronounced (approx.): zy-LAIR-ee-uh pol-ee-MOR-fuh

Finger-like clubs change from pale young growth to darker mature forms.

Dead Man’s Fingers. Select the photo to browse the gallery. Photographs © Where’s Wildlife.

NORTH AMERICAN GROUP

At a Glance

Family
Xylariaceae
Size
Club-shaped growths; size varies
Habitat
Decaying hardwood stumps, roots and logs
Ecological role
Decomposes hardwood
Spore surface
Spores develop in tiny surface chambers

Fruiting varies with local weather and habitat.

Three Identification Clues

01

Stout, finger-like clubs

02

Pale young tips or dark mature surfaces

03

Associated with decaying or buried wood

Field Photographs

Compare form, texture and growing surfaces in the photographs below.

Identification & Look-alikes

What to Look For

These photographs support the Dead Man’s Fingers group. The pale pair represents a younger-looking form; the other set shows darker clubs.

A Closer Look

Several large Xylaria species resemble one another. Xylaria polymorpha group is used here without claiming a microscopic species confirmation.

Habitat & Life History

Habitat & Season

Decaying hardwood stumps, roots and logs. Visible from spring into fall.

Ecology & Fruiting

Young surfaces can be coated in pale asexual spores; mature surfaces darken and develop tiny spore-producing chambers.

Did You Know?

Look closely

Stout, finger-like clubs.

Compare the setting

Associated with decaying or buried wood.

About this identification

The label follows the identification level stated above.

Range & Sightings

Where It Lives

These photographs were taken in Illinois or Wisconsin; the exact location of each image is unconfirmed. The observation map provides wider context.

Recorded Observations

Explore reported sightings on iNaturalist. Observation records are not a complete range map.

Identification notes & comments

Think a photograph has a different identification? Please include its filename or describe the image, suggest a name, and explain the identifying features. Links to reliable references are welcome. Thoughtful corrections help improve this guide.

Suggestions are reviewed before we change a label. First-time comments may await moderation.

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