Lobaria hallii
Local name: hårig skrovellav
Lobaria hallii is a large foliose lichen with a distinctive hairy, wrinkled thallus that forms broad, leafy lobes on tree bark. This epiphytic species plays a crucial ecological role as a nitrogen-fixer in forest ecosystems, contributing essential nutrients to its environment while serving as habitat and food for various invertebrates.
Taxonomy & Classification
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Peltigerales
Family
Lobariaceae
Genus
Lobaria
Lobaria hallii belongs to the family Lobariaceae, order Peltigerales, within the Lecanoromycetes class.
Species Profile
Lobaria hallii is a large foliose lichen with a distinctive hairy, wrinkled thallus that forms broad, leafy lobes on tree bark. This epiphytic species plays a crucial ecological role as a nitrogen-fixer in forest ecosystems, contributing essential nutrients to its environment while serving as habitat and food for various invertebrates.
Lobaria hallii is critically endangered primarily due to habitat loss from logging and forest fragmentation in old-growth forests of the Pacific Northwest. This epiphytic lichen requires very specific microclimate conditions found only in mature forest ecosystems with high humidity and stable temperatures. Climate change further threatens remaining populations by altering the moisture regimes essential for its survival.
Key Facts
Habitat & Distribution
Lobaria hallii grows exclusively on the bark of old-growth deciduous and mixed forests, particularly favoring mature maple, oak, and ash trees in humid, sheltered valleys. It requires stable microclimates with high air humidity and minimal temperature fluctuations, typically found in undisturbed forest interiors.
Threats
IUCN Red List: Critically Endangered
Lobaria hallii is critically endangered primarily due to habitat loss from logging and forest fragmentation in old-growth forests of the Pacific Northwest. This epiphytic lichen requires very specific microclimate conditions found only in mature forest ecosystems with high humidity and stable temperatures. Climate change further threatens remaining populations by altering the moisture regimes essential for its survival.
Climate change and altered precipitation patterns
Forest fragmentation
Old-growth forest logging
Air pollution
Habitat degradation from edge effects
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). Lobaria hallii (Lobaria hallii). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/harig-skrovellav