This member of the Cladonia (reindeer lichen) genus is whitish-grey in colour (2) and grows in low (1), bushy clumps (2). The familiar common name of these lichens, 'reindeer moss' is a misnomer, as the species is a lichen. This name arose because many members of the Cladonia genus comprise a major part of the diet of reindeer during winter (3), but this species, which as the specific name mediterranea suggests, does not occur in areas supporting reindeer (5).