Description: The tiny yellow pruinose discs (perithecia) of this species are to be found on the thallus of Lichenomphalia hudsoniana on bare peaty moorlands. Each yellow disc is attached to clusters of green algae each approximately the same size as the disc. Spores are oblong 4–6 x 1.7–3mm diam. T. epipolium will also grow on other hosts, but none have been reported from Ireland.

Key Identification Features:

• Thallus = Lichenomphalia hudsoniana algae; discs hidden within spherical yellow granules which are conspicuous against the host
• Search the habitats of the host for it.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Thelocarpon epibolum s. lat. at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Thelocarpon epibolum s. lat. at iNaturalist World Species Observations database.