One of the most unsettling sights in the forest, this fungus looks exactly like its name suggests: a cluster of blackened, swollen, arthritic fingers reaching up from the earth. While it might look like a scene from a horror movie, it is actually a vital "cleanup crew" member of the forest floor.

Habitat in the ANF
In the Allegheny National Forest, Dead Man’s Fingers are commonly found at the base of rotting hardwood stumps—particularly Beech, Maple, and Oak. They often appear to be growing directly out of the soil, but they are always attached to buried wood or decaying roots just beneath the surface. You can find them year-round, though they are most noticeable in the summer and autumn when they reach their full maturity.

Ecology and the Slow-Motion Spore
Unlike soft, fleshy mushrooms that pop up and rot in a few days, Xylaria polymorpha is tough and woody. It is a "flask fungus" that uses a unique time-release mechanism:

Patience: Instead of releasing spores all at once, it shoots them out a few at a time over several months or even years.

Resilience: This ensures spores are released during perfect weather conditions.

Function: Ecologically, it consumes the "glues" (polysaccharides) that hold wood together, leaving behind a soft, nutrient-rich mulch for forest insects.

Identification Key
The "Fingers": Look for 3 to 6 upright, club-shaped structures (stromata) that are roughly 1 to 4 inches tall. They are often bent or knobby, resembling knuckles.

The Costume Change: * Spring: "Fingers" are pale bluish-grey with white tips.

Late Summer: They turn dark brown to charcoal black with a wrinkled, "charred" texture.

The Inside: If snapped open, the interior is solid, fibrous white, contrasting sharply with the black exterior.

The Surface: Mature specimens have a "pimply" surface caused by tiny, embedded pores (perithecia) where the sexual spores are produced.