Bolbitius titubans

Bolbitius titubans
Scientific classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Bolbitiaceae
Genus: Bolbitius
Species:
B. titubans
Binomial name
Bolbitius titubans
(Bull.) Fr.
Synonyms
Bolbitius titubans
Gills on hymenium
Cap is ovate or flat
Hymenium is adnate or free
Stipe is bare
Spore print is brown
Ecology is saprotrophic
Edibility is edible, but unpalatable

Bolbitius titubans, also known as Bolbitius vitellinus, and commonly known as the sunny side up is a widespread species of mushroom found in North America. It grows on grass and dung.