Truncated Dimple Lichen
Gyalecta truncigena
Conservation status data sourced from the IUCN Red List of Threatened Species.
Taxonomy & Classification
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Gyalectales
Family
Gyalectaceae
Genus
Gyalecta
Truncated Dimple Lichen belongs to the family Gyalectaceae, order Gyalectales, within the Lecanoromycetes class.
Species Profile
Species profile data sourced from the IUCN Red List of Threatened Species.
Truncated Dimple Lichen faces severe threats from air pollution and acid rain, which directly damage its sensitive thallus and disrupt its photosynthetic processes. Habitat loss through deforestation and urban development has eliminated many of its specialized microhabitats, while climate change is altering the precise moisture and temperature conditions this species requires for survival.
Key Facts
Habitat & Distribution
This lichen species typically grows on the bark of mature deciduous trees in old-growth and semi-natural forests, particularly favoring smooth-barked species in humid, sheltered locations. It requires stable microclimatic conditions with consistent moisture levels and minimal air pollution exposure.
Threats
IUCN Red List: Critically Endangered
Truncated Dimple Lichen faces severe threats from air pollution and acid rain, which directly damage its sensitive thallus and disrupt its photosynthetic processes. Habitat loss through deforestation and urban development has eliminated many of its specialized microhabitats, while climate change is altering the precise moisture and temperature conditions this species requires for survival.
Air pollution and acid rain
Climate change altering moisture regimes
Habitat loss from deforestation
Urban development and infrastructure expansion
Loss of host tree species
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). Truncated Dimple Lichen (Gyalecta truncigena). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/truncated-dimple-lichen