''Cladonia cenotea'' or the powdered cup lichen is a species of

cup lichen A cup is an open-top used to hold hot or cold liquids for pouring or drinking; while mainly used for drinking, it also can be used to store solids for pouring (e.g., sugar, flour, grains, salt). Cups may be made of glass, metal, china, clay, ...

in the family Cladoniaceae. It was first described by Erik Acharius in 1823. It grows on the north side of rotting wood or stumps in shaded areas.

References

{{Taxonbar cenotea Lichen species Lichens described in 1989 Taxa named by Erik Acharius