Does anybody know which species the lichen on the picture is!
http://www.danbbs.dk/~gro_poul/billedkasse.htm

Who told you it is a lichen? It looks like a liverwort to me. Liverworts are
related to mosses & have the same reproductive system, but they look like
pieces of green rubber.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)