Iceland moss is the common name of Cetraria islandica, an Arctic-alpine lichen whose upright, leaflike growth habit gives it the appearance of a moss despite being a lichen. It typically grows three to four inches tall with flattened, fringed, pale chestnut-brown lobes, and is abundant on lava slopes and mountains in Iceland and across Arctic North America from Alaska to Newfoundland. Traditionally gathered as food and boiled into breads and porridges during times of scarcity, it is used today mainly in folk remedies for coughs and other respiratory complaints.
Facts
Classification
System (Realm) Relationship to PeopleUsed in Traditional Medicine 2 Relationship to PeopleEaten or Drunk by People 2 Comparison
NatureServe Rank CITES Appendix Scientific Name Conservation Status Connections
Child Taxon Of
Source Wikidata: Iceland Moss
In the Other Atlases
Found In
Also in Geography Atlas: where this subject is found.
Also in Geography Atlas: where this subject is found.
Also in Geography Atlas: where this subject is found.
Also in Geography Atlas: where this subject is found.
Also in Geography Atlas: where this subject is found.
Also in Geography Atlas: where this subject is found.
Sources
1. GBIF Species API
2. Wikipedia: Cetraria islandica
Wikipedia- Wikidata Q582664 (P225 taxon name)
Uses
All parts of the lichen are edible.
Uses (medicinal)
It has been recommended for medicinal use by alternative medicine sites, in doses of 2 to 4 grains (0.1 to 0.25 grams), as a bitter tonic and aperient.
View the Source 3. NatureServe Explorer: Cetraria islandica
NatureServe ExplorerGlobal rank (roundedGRank)Quote, Global rank (roundedGRank)
"roundedGRank": "G5"
View the Source 4. UNEP-WCMC Species+ database (CITES Secretariat): Species+: Cetraria islandica
UNEP-WCMC Species+ database (CITES Secretariat)Species+ taxon_concepts, id 20670Quote, Species+ taxon_concepts, id 20670
"rank":"SPECIES","name_status":"A","updated_at":"2026-01-21T09:45:16.132Z","active":true,"cites_listing":"NC"
View the Source 5. GBIF Backbone Taxonomy (IUCN Red List category): IUCN Red List category of Cetraria islandica
GBIF Backbone Taxonomy (IUCN Red List category)iucnRedListCategory recordQuote, iucnRedListCategory record
"category": "NOT_EVALUATED"
View the Source IUCN Red List of Threatened Species
Wikidata: Iceland Moss
Child Taxon Of: Ascomycota, Wikidata parent-taxon (P171) chainView the Source Reader Challenges (0)
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