Phylum: Ascomycota Family: Lachnaceae
Dasyscyphella nivea (R. Hedw.) Raitv.
Although described as snowy, the hymenium can be quite creamy-yellow when fresh. Common on plant debris including beech mast and pine cones
References:
Læssøe, T. & Petersen, J.H. (2019) Fungi of Temperate Europe, Volume 2
Ellis, M.B. & Ellis, J.P (1997 new enlarged edition) Microfungi on Land Plants: An Identification Handbook