Family: Species: Q Growth type lichenicolous on Arthonia radiata Photos: Dromore, Co. Cork, SW Ireland. Tiny black perithecia on the host thallus. Asci c.22-30 x 12-14 µm, the spores appeared 1-septate, 11-13 x 2.5-3 µm and guttulate. Micrographs below. Stigmidium arthoniae is recorded from Arthonia radiata but the spores are larger, 17-23 x 4-5 µm and 1(-3) septate

Micrograph





Lichenicolous on Arthonia radiata. July 2024