Lichenicolous on Arthonia radiata Growth type lichenicolous The spores (or conidia as no asci were seen in the sections examined) were 1-septate, 10-13 x 2.5-3 µm and guttulate. Micrographs below. Stigmidium arthoniae is recorded on Arthonia radiata but the spores are 17-23 x 4-5 µm, 1(-3) septate

Micrographs



Lichenicolous on Arthonia radiata
Photographs: Broadstone, Dorset. June 2025