Bryobroma hemisphaericum

Hosts: Plagiochila asplenioides s.l., Plagiochila porelloides, Plagiochila spinulosa

Bryobroma cf. hemisphaericum on Plagiochila spinulosa. Scotland, near Ardtornish, September 2024. Note the abundant, clustered black ascomata and darkened host leaves.
Mycelium of the above in water.
Ascospores of the above in water. Appendages are difficult to visualise.