Suggestion: Tephromela atra - In deutscher Sprache vielleicht: Schwarze Kuchenflechte, Schwarze Kuchenkrustenflechte

TEPHROMELA ATRA (SYN. LECANORA ATRA, SCUTELLARIA ATRA, PARMELIA ATRA, RINODINA ATRA, PSORA ATRA, VERRUCARIA ATRA, PATELLARIA ATRA)

Well captured! Warm greetings from the south of Hamburg, Susanne

Thank you very much

ich denke es ist Papier (Tempotuch) nass geworden und auf Stein verklebt

Thanks but I suspect other answers are closer to the ID

Du Lichen crustacé je pense bonne journée.

Thanks for that I will investigate

Definitely some sort of lichen Colin, but there are so many varieties, I wouldn't even try to guess at a particular kind..!!

Very nicely captured though!

Thanks Keith

It definitely looks like a species of encrusting lichen.

Exquisite capture!