Pear-shaped Puffball

(Lycoperdon pyriforme)

Overview

The pear-shaped puffball (Lycoperdon pyriforme) is a small woodland fungus found on decaying wood or moss-covered surfaces. Despite sometimes appearing to grow from living trees, it feeds only on decomposing organic matter, helping recycle nutrients in forest ecosystems.

Appearance

• Shape: Rounded or slightly pear-shaped, typically 1–3 cm in diameter.
• Color: White when young, gradually turning tan or brown as it matures.
• Surface: Covered in small warty spines that wear off over time, leaving a dotted pattern.
• Interior (Gleba): White and firm when young, turning olive-brown and powdery at maturity.
• Spore Release: Occurs through a small pore at the top — releasing a visible brown puff when touched.

Habitat

• Substrate: Prefers decaying wood, stumps, and mossy logs, though sometimes appears on bark of living trees where organic matter accumulates.
• Environment: Moist, shaded forests — often beneath oaks or maples.
• Season: Late summer through autumn, occasionally persisting into early winter.

Ecological Role

The pear-shaped puffball is a saprobe, breaking down decomposing plant matter. By doing so