Cladonia pyxidata  

Podetia 0.5-1.5 (-3) cm tall, grey, occasionally ± brownish; scyphi 3-10 mm diam., ± regular, rarely proliferating from the rim, regularly tapering towards the base, stalk very short or inapparent; surface uneven with coarse, smooth, corticate granules, particularly well-developed within the scyphi, often with scattered, partially decorticate pale areas. Soredia absent. Basal squamules often rather small, rounded or elongate, with a few indentations, sparse or often abundant, becoming ± erect.
Anamorph: conidiomata pycnidia, brown, developing on the rim of the scyphi.
Teleomorph: ascomata apothecia, brown, common, often shortly elevated, on the rim of the scyphi.
Chemistry: thallus C–, K–, KC–, Pd+ red, UV– (fumarprotocetraric acid).