''Polychidium'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
lichenized fungi
A lichen ( , ) is a hybrid colony (biology), colony of algae or cyanobacteria living symbiotically among hypha, filaments of multiple fungus species, along with yeasts and bacteria embedded in the cortex or "skin", in a mutualism (biology), m ...
within the
Placynthiaceae
The Placynthiaceae are a lichenized family of fungi in the order Peltigerales. Species of this family are found largely in northern temperate regions.
Genera
Numbers of species accepted by Species Fungorum
''Index Fungorum'' is an internati ...
family. It is
monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...
, containing only the species ''Polychidium muscicola''.
References
Peltigerales
Lichen genera
Taxa named by Erik Acharius
Peltigerales genera
Taxa described in 1810
{{Peltigerales-stub