Found growing on needle litter under a dense canopy of Sitka Spruce Picea sitchensis. (First record, confirmed by Brian Spooner. Kew accession code K(M)188442.) A second collection was made in a similar habitat but growing on Sphagnum

References: 
Hansen & Knudsen (2000) Nordic Macromycetes, Vol.1: Ascomycetes
Breitenbach & Kranzlin (1984) Fungi of Switzerland, Volume 1, Ascomycetes