• Arthonia apotheciorum (A. Massal.) Almq.

There are no records for this species at present.

This species grows within the discs of small saxicolous Lecanora crusts. The giveaway clue is the blackening discs of the host and the narrow one-septate spores that can be seen in a squash of the disc. In Ireland, the species is widely dispersed.

Key characteristics

  • Grows in the small discs of Lecanora crusts; mainly on limestone rock
  • The narrow one-septate spores <15m long is sufficient to distinguish it.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Arthonia apotheciorum (A. Massal.) Almq.. [In] LichenIreland. Accessed on 2019-08-18.