Rosette Pixie-cup Lichen

Cladonia pocillum is a "pixie-cup lichen" with funnel-shaped podetia tapering gradually towards the base, exterior variably clothed with corticate granules and often also with small to large squamules, interior with conspicuous, disk-like, corticate granules, soredia absent; basal squamules rather large, appressed to the substrate or frequently coalescent to form imbricated, often erect rosettes, commonly tinged with grey-pink, margins flat, abraded; apothecia brown, large, conspicuous and often ring-like, more or less sessile on the podetial margins or on very short, stalk-like proliferations (<5mm).