Lichens : Thelocarpales : ThelocarpaceaeLichens

Thelocarpon intermediellum Nyl.

Description: Similar to T. laureri (described elsewhere) except the spores are longer and oblong-shaped. On rotten wood, old leather and moist rock usually where algae are present. All collections of Thelocarpon need to be sent to a competent referee for naming. One record: north-east Ireland.

Key Identification Features:

  • Like T. laureri with yellow-dusted perithecia, non-lichenised but often with algae present
  • Spores oblong (3–4 x 1–1.5µm).

Original text submitted by Vince J. Giavarini

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

iNaturalist: Thelocarpon intermediellum at iNaturalist World Species Observations database.

 Giavarini, Vince J., Simms, Michael J., & Davey, Simon, 2026. Thelocarpon intermediellum. Nyl.. [In] Lichen Ireland.
https://www.habitas.org.uk/lichenireland/species.php?item=19080. Accessed on 2026-11-12.