Peeling Puffball (Lycoperdon marginatum)

🏷️ Description

Meet Lycoperdon marginatum, also known as the peeling puffball 🍂—a fascinating, spiny mushroom that peels like bark and puffs like smoke. Though small in size, this puffball is full of intrigue, mystery, and even controversy. Found across multiple continents and studied for centuries, it's a mycological gem worth a closer look!

🧬 Taxonomy & Naming: Described scientifically in 1839 by Carlo Vittadini, Lycoperdon marginatum belongs to the genus Lycoperdon, subgenus Lycoperdon, alongside Lycoperdon perlatum and Lycoperdon norvegicum. It’s affectionately dubbed "the peeling puffball" for its unique way of shedding spines.

📬 In Culture: In 1983, Lycoperdon marginatum was honored on a postage stamp from the Ascension Islands—a testament to its unique beauty.

🔎 Identification

🧢 Fruiting Body

The fruit body starts off round or cushion-shaped, becoming pear-shaped and flattened with age. It measures:

• 0.4 to 2.0 inches (1 to 5 cm) wide

• 0.8 to 1.6 inches 2 to 4 cm) high

It stands on a short, tapering stalk, and is originally white, covered in densely packed, short spines. These spines tend to peel off in patches or sheets, not individually—unlike many similar puffballs—revealing a thin, papery inner skin with a finely granular brown to olive-brown surface.

A small apical pore forms at the top of the mature puffball through which the spores are released 🌬️.

🧠 Gleba (Spore Tissue)

Inside, the gleba (spore mass) transitions through:

• White and firm (immature)

• Greenish-brown

• Greyish-brown and powdery (mature)

The base of the puffball contains a sterile section, ranging from minimal to well-developed, with whitish to brownish flesh.

🔬 Microscopic Features

• Spores: Globose (spherical), 3.5–4.5 µm, minutely warted or nearly smooth, appearing olive-yellow in KOH.

• Capillitial threads: Yellowish to olive in KOH, 2–7 µm wide, often pitted, with walls 0.5–1 µm thick. They are branched occasionally and do not change color as spores mature.

🌍 Habitat & Distribution

This saprobic mushroom decomposes organic matter and thrives:

• On the ground, singly or in groups

• In nutrient-poor, sandy soils, oak-pine woodlands, roadsides, and even urban areas

• Under both conifers and hardwoods

• During summer to winter (June–December)

📍 Distribution: Europe, North America, South America, Australia

⚠️ Edibility & Use

The edibility of Lycoperdon marginatum is debated:

• Some sources say it's edible when young, but not substantial

• Others list it as poisonous

Interestingly, it is used in Mexico in traditional rituals to produce auditory hallucinations, though no psychoactive compounds have been identified in lab studies 🧪.

👀 Look-Alikes

Many puffballs resemble Lycoperdon marginatum, but key differences include:

• Lycoperdon echinatum: Has longer spines that don’t slough off in sheets

• Lycoperdon rimulatum: Its exoperidium may peel, but lacks spines

• Lycoperdon pulcherrimum: Similar but with much longer spines

• Vascellum curtisii: Smaller, urban, and remains white throughout

• Lycoperdon nigrescens: Dark from the start

• Lycoperdon caudatum: Found in moist, open areas, with long-tailed spores

📜 Synonyms

• Lycoperdon muricatum Bonorden (1857), Botanische zeitung, 15(35), p. 596

• Lycoperdon calvescens Berkeley & M.A. Curtis (1873), Grevillea, 2(16), p. 50

• Utraria marginata (Vittadini) Quélet (1886), Enchiridion fungorum in Europa media et praesertim in Gallia vigentium, p. 241

Photo sources:

Photo 1 - Author: Mathias Rocheleau-Duplain (CC BY 4.0)

Photo 2 - Author: Karen Guin (CC BY 4.0)

Photo 3 - Author: Laura Clark (CC BY 4.0)

Photo 4 - Author: Benny Albro (CC BY-NC)