Ascobolus denudatus is a species of apothecial fungus belonging to the family Ascobolaceae.
This is an uncommon European species appearing as tiny yellow discs up to 1 mm across on rotting straw. It can be encountered at any time of year but is mainly seen from summer to early autumn.
. Michael Jordan (mycologist) . The Encyclopedia of Fungi of Britain and Europe . . 2004 . 34 . 978-0-7112-2379-0.