Collema furfuraceum (fertile)

Collema furfuraceum (fertile)

Observation - Collema furfuraceum (fertile) - UK and Ireland. Description: Several thalli found on a boulder in a coastal stream, some bearing apothecia - reportedly very rare in this species. Edit: Additional photo - an attempt to show the terete isidia.

Several thalli found on a boulder in a coastal stream, some bearing apothecia - reportedly very rare in this species.
Edit: Additional photo - an attempt to show the terete isidia.