Thallus inconspicuous on decaying mosses, small round apothecia (0.1-)0.15-0.2 mm diameter with a pale yellowish brown disk, with the margin similar or slightly darker. Asci 16- to 24-spored, with ascospores broadly ellipsoid, simple, (2.5-)3-4(-5) × 2-2.3 μm. On bleached decaying bryophytes on bark, more rarely on moss on limestone.
Only known from Britain and listed as an International Responsibility species, also listed as Notable by Sanderson et al (2018)
Sanderson, N. A. Wilkins, T., Bosanquet, S. & Genney, D. (2018) Guidelines for the Selection of Biological SSSIs. Part 2: Detailed Guidelines for Habitats and Species Groups. Chapter 13 Lichens and associated microfungi. Joint Nature Conservation Committee 2018 https://hub.jncc.gov.uk/assets/330efebf-9504-4074-b94c-97e9bbdbe746