Identiified by John Leach. 13 December 2015 Hampshire. Photograph copyright Leif Goodwin
Disk shaped, pruinose, to about 0.5 mm across
Spores spindle shaped, curved, with 4 drops (15-20) x (4-6) µm2. Asci 8 spored. Paraphyses filliform, forked at the tips.
I am grateful to John Leach for identifying the specimens shown and to Andreas Gminder for confirming the identification
A close up view. 13 December 2015 Hampshire. Photograph copyright Leif Goodwin