Confidence: I'm as sure as I can be.
Notes: ID is based on the 3rd photo. The second (and 1st) photos are probably the same, but I cannot be entirely sure and it is not unusual to have two or more Cladonia species growing mixed together. So for photo 3: note long, cyclindrical stem, abruptly expanded cup with an even margin and the surface finely powdery (sorediate). There are a number of similar species.