Arthonia phaeophysciae Arthoniaceae
Arthonia phaeophysciae #

Chemical results: Hypothecium K+ grey

Occasional. Lichenicolous on Phaeophyscia orbicularis, Phaeophyscia endophoenicea and Phaeophyscia sciastra.
BLS conservation evaluation: LC NS

Thallus absent, the abundant black apothecia breaking through the host cortex. Spores 1-septate but septum often indistinct, 12-14 4-6 m. Microscope photograph below.

Similar: Arthonia epiphyscia is confined to Physcia species


Arthonia phaeophysciae

Microscope photograph
Arthonia phaeophysciae
Arthonia phaeophysciae
Studland, Dorset. May 2015

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