Cladonia floerkeana or British soldier
A small, but bright red colored cup lichen that can be found
in fields and sand dunes. Its length is about half a centimeter.
confusion with other cup lichen
C fluorkeana can be confused with other cup lichen,
like red pixy moss.
But red pixie moss has larger and broader apothecia.
Cladonia wonderland on a roof made of reed, on can see:
Cladonia fimbriata, Cladonia glauca and Cladonia floerkeana.