Lichens : Lecanorales : ByssolomataceaeLichens

Micarea myriocarpa V.Wirth & Vězda ex Coppins

Description: This is a lichen of dry granitic overhangs, especially the undersides of large boulders. Search these undersides for small scurfy patches which are pale green when fresh and dotted with exceptionally small (0.1–0.15mm diam.) red-coloured discs stuck together like warts.

Key Identification Features:

  • Thallus pale-greenish, often with minute wine-red discs aggregated into clusters (x10 lens to see)
  • Dry granitic boulders: on the undersides, or below overhanging outcrops.

Original text submitted by Vince J. Giavarini

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

iNaturalist: Micarea myriocarpa at iNaturalist World Species Observations database.

 Giavarini, Vince J., Simms, Michael J., & Davey, Simon, 2026. Micarea myriocarpa. V.Wirth & Vězda ex Coppins. [In] Lichen Ireland.
https://www.habitas.org.uk/lichenireland/species.php?item=18828. Accessed on 2026-11-12.