Doughnut fungus
Rhizina undulata
A species of Rhizina.
The distinctive doughnut fungus flourishes in post-wildfire environments, recognized for its extensive subterranean root network. It manifests as noticeable round formations on the forest floor, frequently encircling charred tree remains, identifiable by its flattened, undulating surface. This fungus contributes to forest health through its decomposition of deceased organic material.
In This Article
Attributes of Doughnut fungus
Cap Diameter
3 - 10 cm
Height
1 - 3 cm
Cap
Up to 6 cm wide; surface dark brown to blackish brown; smooth but irregularly undulating
Stem
Rhizoids; whitish to yellowish
Flesh
Thick; tough; reddish brown
Spore Print Color
White
Odor
Mildly mushroomy but not distinctive.
Body Color
BrownBlackYellowWhitePurple
Flesh Bruises
The flesh or milk does not discolor when bruised or cut.
Growth Form
Gregarious
Nutrient Gathering
Parasitic
Substrate
On soil
You can find Doughnut fungus by these plants
Pines, Spruces
Species Status
Cosmopolitan distribution
Endangered Species
No
Scientific Classification of Doughnut fungus
Phylum
Sac fungi
Class
Pezizomycetes
Order
Pezizales
Family
Rhizinaceae
Genus
Rhizina
Toxicity and Edibility of Doughnut fungus
Is Doughnut fungus Toxic?
Toxicity information is not available for this mushroom. Always consult with an expert before consuming any wild mushrooms.
