''Arthonia stereocaulina'' is a species of

lichenicolous fungus A lichenicolous fungus is a parasitic fungus that only lives on lichen as the host. A lichenicolous fungus is not the same as the fungus that is the component of the lichen, which is known as a lichenized fungus. They are most commonly specific to ...

in the family Arthoniaceae.

Distribution

''Arthonia stereocaulina'' has been reported from

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

and

Svalbard Svalbard ( , ), also known as Spitsbergen, or Spitzbergen, is a Norwegian archipelago in the Arctic Ocean. North of mainland Europe, it is about midway between the northern coast of Norway and the North Pole. The islands of the group range ...

Host species

As the name suggests, ''Arthonia stereocaulina'' infects

lichen A lichen ( , ) is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.Stereocaulon ''Stereocaulon'' is a genus of lichens. Members of ''Stereocaulon'' are commonly called snow lichens. Species *'' Stereocaulon alpinum'' *'' Stereocaulon apocalypticum'' *'' Stereocaulon arcticum'' *'' Stereocaulon arenarium'' *'' Stereocau ...

''. Known host species are: * '' Stereocaulon alpinum'' * '' Stereocaulon arcticum'' * '' Stereocaulon botryosum'' * '' Stereocaulon capitellatum'' * ''

Stereocaulon depressum ''Stereocaulon depressum'' is a species of snow lichen belonging to the family Stereocaulaceae. Ecology ''Stereocaulon depressum'' is a known host to the lichenicolous fungus A lichenicolous fungus is a parasitic fungus that only lives on lic ...

'' * ''

Stereocaulon glareosum ''Stereocaulon glareosum'' is a species of snow lichen belonging to the family Stereocaulaceae. Ecology ''Stereocaulon glareosum'' is a known host to the lichenicolous fungus A lichenicolous fungus is a parasitic fungus that only lives on lic ...

'' * '' Stereocaulon groenlandicum'' * '' Stereocaulon intermedium'' * '' Stereocaulon myriocarpum'' * '' Stereocaulon paschale'' * '' Stereocaulon rivulorum'' * '' Stereocaulon saxatile'' * '' Stereocaulon tomentosum''

References

Arthoniomycetes Fungi of Canada Fungi of Iceland Fungi of Russia Fungi of Svalbard Fungi of the United States Taxa described in 1993 Taxa named by Rolf Santesson Lichenicolous fungi {{Arthoniomycetes-stub