''Cladonia alaskana'', commonly known as the ''Alaskan 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 Cladoniaceae family. It is found in and around the

arctic circle The Arctic Circle is one of the two polar circles, and the most northerly of the five major circles of latitude as shown on maps of Earth. Its southern equivalent is the Antarctic Circle. The Arctic Circle marks the southernmost latitude at w ...

, growing in acidic soils. 40-80 mm tall and up to 2 mm in diameter. This species grows over boulders in heath and

tussock Tussock may refer to: * Tussock grass, a group of species in the family Poaceae *Floating island * Lymantriinae, called tussock moths or tussocks See also * Hassock (disambiguation) Hassock may refer to: * Kneeler, a cushion or a piece of f ...

tundras.

References

alaskana Lichens of the Arctic Lichen species {{Lichen-stub