Beaded Rim-lichen
Lecanora cinereofusca
Lecanora cinereofusca is a species of corticolous (bark-dwelling) crustose lichen in the family Lecanoraceae.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Lecanora_cinereofusca
Taxonomy & Classification
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Lecanorales
Family
Lecanoraceae
Genus
Lecanora
Beaded Rim-lichen belongs to the family Lecanoraceae, order Lecanorales, within the Lecanoromycetes class.
Species Profile
Lecanora cinereofusca is a species of corticolous (bark-dwelling) crustose lichen in the family Lecanoraceae.
Beaded Rim-lichen (Lecanora cinereofusca) is declining primarily due to air pollution and habitat degradation affecting its specialized substrate requirements. Urban development and industrial activities have reduced suitable habitat and altered air quality conditions necessary for this sensitive lichen species.
Key Facts
Habitat & Distribution
In the United Kingdom, where it is considered very rare, Lecanora cinereofusca grows on birch and willow trees. It was recorded for the first time in the Czech Republic in 2014, although it is considered extinct there as it is known only from a single historical collection from an old-growth beech forest. In the Alps, the lichen has been recorded growing on various hosts: Acer pseudoplatanus,...
Threats
IUCN Red List: Endangered
Beaded Rim-lichen (Lecanora cinereofusca) is declining primarily due to air pollution and habitat degradation affecting its specialized substrate requirements. Urban development and industrial activities have reduced suitable habitat and altered air quality conditions necessary for this sensitive lichen species.
Air pollution and atmospheric nitrogen deposition
Urban development and habitat loss
Climate change affecting moisture regimes
Industrial emissions and acid rain
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Beaded Rim-lichen (Lecanora cinereofusca). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/beaded-rim-lichen