CRCritically Endangered

vit knagglav

Thalloidima candidum

Conservation status data sourced from the IUCN Red List of Threatened Species.

01Classification

Taxonomy & Classification

Kingdom

Fungi

Phylum

Ascomycota

Class

Lecanoromycetes

Order

Lecanorales

Family

Ramalinaceae

Genus

Thalloidima

vit knagglav belongs to the family Ramalinaceae, order Lecanorales, within the Lecanoromycetes class.

02Description

Species Profile

Species profile data sourced from the IUCN Red List of Threatened Species.

Thalloidima candidum faces severe threats from habitat loss due to deforestation and urban development, which has fragmented its remaining populations. Climate change is altering the specific microhabitat conditions this lichen requires, while air pollution from industrial activities is degrading the air quality essential for its survival.

Key Facts

IUCN StatusCritically Endangered (CR)
GroupFungi
03Habitat

Habitat & Distribution

This crustose lichen species occurs on bark of mature deciduous trees in old-growth and semi-natural forests, particularly favoring oak and beech trees in humid, shaded environments. It requires stable microclimatic conditions with high air humidity and low levels of atmospheric pollution.

TERRESTRIALMajor
04Threats

Threats

!

IUCN Red List: Critically Endangered

Thalloidima candidum faces severe threats from habitat loss due to deforestation and urban development, which has fragmented its remaining populations. Climate change is altering the specific microhabitat conditions this lichen requires, while air pollution from industrial activities is degrading the air quality essential for its survival.

Air pollution and acid deposition

HighOngoing

Climate change impacts on microhabitat conditions

HighOngoing

Habitat loss and fragmentation

HighOngoing

Forest management practices

MediumOngoing

Urban development pressure

MediumOngoing
Community

Community Sightings

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07Sources

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). vit knagglav (Thalloidima candidum). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/vit-knagglav

Full citation guide & data usage terms