kornfiltlav
Parmeliella testacea
Parmeliella testacea is a foliose lichen species characterized by its brownish to olive-green thallus with distinctive lobed margins and a somewhat leathery texture. This cyanolichen forms symbiotic relationships with cyanobacteria, enabling it to fix atmospheric nitrogen and contribute to nutrient cycling in its ecosystem while providing habitat microstructures for small invertebrates.
Taxonomy & Classification
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Peltigerales
Family
Pannariaceae
Genus
Parmeliella
kornfiltlav belongs to the family Pannariaceae, order Peltigerales, within the Lecanoromycetes class.
Species Profile
Parmeliella testacea is a foliose lichen species characterized by its brownish to olive-green thallus with distinctive lobed margins and a somewhat leathery texture. This cyanolichen forms symbiotic relationships with cyanobacteria, enabling it to fix atmospheric nitrogen and contribute to nutrient cycling in its ecosystem while providing habitat microstructures for small invertebrates.
Parmeliella testacea faces severe decline primarily due to air pollution and habitat degradation affecting the specific microenvironments required for lichen survival. The species is particularly vulnerable to nitrogen deposition and sulfur dioxide emissions which alter bark chemistry and disrupt the delicate symbiotic relationship between fungal and algal components.
Key Facts
Habitat & Distribution
This lichen typically grows on the bark of deciduous trees in humid, old-growth forests and well-established woodlands with stable microclimatic conditions. It shows preference for trees with rough bark in areas with consistent moisture levels and minimal air pollution.
Threats
IUCN Red List: Endangered
Parmeliella testacea faces severe decline primarily due to air pollution and habitat degradation affecting the specific microenvironments required for lichen survival. The species is particularly vulnerable to nitrogen deposition and sulfur dioxide emissions which alter bark chemistry and disrupt the delicate symbiotic relationship between fungal and algal components.
Air pollution and acid deposition
Habitat loss and forest fragmentation
Changes in forest management practices
Climate change affecting moisture regimes
Community Sightings
Report a sightingNo community sightings yet. Be the first to report!
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). kornfiltlav (Parmeliella testacea). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/kornfiltlav