Onion earthball

Scleroderma cepa

A species of Earth balls.

The onion earthball belongs to the tough-skinned puffball lineage, a category of fungi characterized by their generally rounded, puffball-like shape, but distinguished by a robust exterior. For the onion earthball specifically, this outer layer frequently cracks, lending the mushroom a fractured look. Another notable feature is the sharp divergence between its skin, typically a light white or yellow, and its internal spore mass, which is almost black. Onion earthballs are toxic.

In This Article
Attributes Classification Toxicity Similar Mushrooms

Attributes of Onion earthball

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Stem Shapes
Rooting
Flesh
Discolours when cut, bruised or damaged
Ring
Ringless
Spore Print Color
Purple-black
Odor
Sharp, spicy, almost chemical.
Body Color
BrownRedWhitePinkCream
Flesh Bruises
The flesh or milk does not discolor when bruised or cut.
Growth Form
Solitary, Gregarious
Nutrient Gathering
Mycorrhizal
Substrate
On soil
You can find Onion earthball by these plants
Pines, Oaks, European beech, Spruces
Occurence Habitats
Meadows, Disturbed Lands
Species Status
Widely distributed
Endangered Species
No

Scientific Classification of Onion earthball

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Phylum
Club fungi
Class
Mushroom-forming fungi
Order
Boletes and allies
Family
Hard-skinned puffballs
Genus
Earth balls
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Toxicity and Edibility of Onion earthball

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Is Onion earthball Toxic?

The unassuming bulbous mushroom of the forest floor, the onion earthball (Scleroderma cepa), poses a deceptive danger due to its resemblance to desirable Puffballs. Ingestion can lead to severe gastrointestinal distress, including vomiting and diarrhea. Therefore, only individuals with extensive knowledge of mushroom identification should attempt to definitively identify any Puffball.