I found that in a monastery garden in Czech Republic this winter. I tried to search it on the internet but unfortunately I didn't find it.
I'm pretty sure that it is a cup lichen from the genus Cladonia. A probable species is Cladonia pyxidata, which is relatively common across Europe. My lichen knowlegde is rusty though, and Cladonia is rather species rich with several species that are relatively similar.
(C. pyxidata, pic from http://fungi.myspecies.info/taxonomy/term/4557/media)