Phylum: Ascomycota Family: Ascobolaceae
Ascobolus stercorarius (Bull.) J. Schröt.
A common disc fungus that grows on herbivore dung, especially cow. Variable in colour, usually starting off lime-green and becoming browner with age. However, they can also start a pale greenish-brown
Doveri (2007) Fungi Fimicoli Italici
Ellis & Ellis (1998) Microfungi on Miscellaneous Substrates
Hansen & Knudsen (2000) Nordic Macromycetes, Vol.1: Ascomycetes