Scleroderma cepa

Scleroderma cepa
Scientific classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Sclerodermataceae
Genus: Scleroderma
Species:
S. cepa
Binomial name
Scleroderma cepa
Pers. (1801)
Scleroderma cepa
Glebal hymenium
No distinct cap
Hymenium attachment is irregular or not applicable
Lacks a stipe
Spore print is white to purple-black
Ecology is mycorrhizal
Edibility is poisonous

Scleroderma cepa, commonly known as the smooth earthball or onion earthball, is an ectomycorrhizal fungus used as a soil inoculant in agriculture and horticulture. It is poisonous.