dimkrimmerlav
Rinodina sheardii
Rinodina sheardii is a crustose lichen species that forms thin, grayish to brownish crusts on rock surfaces. This inconspicuous lichen plays an important ecological role in primary succession, helping to break down rock substrates and create soil conditions that enable other organisms to establish in harsh environments.
Taxonomy & Classification
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Caliciales
Family
Physciaceae
Genus
Rinodina
dimkrimmerlav belongs to the family Physciaceae, order Caliciales, within the Lecanoromycetes class.
Species Profile
Rinodina sheardii is a crustose lichen species that forms thin, grayish to brownish crusts on rock surfaces. This inconspicuous lichen plays an important ecological role in primary succession, helping to break down rock substrates and create soil conditions that enable other organisms to establish in harsh environments.
Rinodina sheardii is critically endangered due to its extremely limited distribution and vulnerability to habitat degradation. This lichen species faces severe threats from air pollution, climate change, and human disturbance to its specialized rocky coastal habitats.
Key Facts
Habitat & Distribution
Rinodina sheardii grows exclusively on siliceous rocks and stone walls in exposed, well-lit locations. It typically colonizes hard, acidic rock surfaces in upland areas where it can withstand extreme temperature fluctuations and intense solar radiation.
Threats
IUCN Red List: Critically Endangered
Rinodina sheardii is critically endangered due to its extremely limited distribution and vulnerability to habitat degradation. This lichen species faces severe threats from air pollution, climate change, and human disturbance to its specialized rocky coastal habitats.
Air pollution and acid deposition
Climate change and sea level rise
Coastal development and habitat destruction
Extremely small population size
Recreational disturbance
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). dimkrimmerlav (Rinodina sheardii). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/dimkrimmerlav