Mushroom Identifier
Photo submitted for the Gem-studded Puffball identification

Community find

Gem-studded Puffball

Lycoperdon perlatum

Group
puffball
Spore print
Olive-brown
Size
2-6 cm diameter at the top, 3-10 cm height.
Season
Summer to late autumn, often appearing after heavy rain.
Habitat
Grows on the ground in a variety of habitats including forests, grassy clearings, and along roadsides; can grow in soil or among leaf litter.
Distribution
Cosmopolitan distribution; found throughout North America, Europe, Asia, and other temperate regions.
Key characteristics
Globose to pear-shaped fruiting body covered in short, cone-shaped spines or warts that leave a net-like pattern when they fall off.
Fruiting body
The fruiting body is 2 to 6 cm wide and 3 to 10 cm tall, often with a distinct 'stem' or sterile base. The outer surface (exoperidium) is white to cream and covered in small spines. The interior (gleba) starts white and firm, turning into a powdery olive-brown mass of spores as it matures. An apical pore at the top releases spores.
How to recognise it
Look for the characteristic 'pearls' or spines on the surface. If you rub your thumb over the surface, the larger spines should fall off easily, leaving a characteristic reticulate pattern behind.
Look-alikes
Lycoperdon pyriforme (grows on wood, not soil) and Calvatia species (larger, often lack the distinct 'pearl' spines).
Ecological role
Saprophytic, breaking down organic matter in the soil and leaf litter.
Notes
When mature, the fruiting body functions like an organic bellows; raindrops hitting the surface compression the internal air, forcing puffs of spores out through the central hole to be carried by the wind.