Rimmed Wart Lichen
CR

Rimmed Wart Lichen

Varicellaria velata

Unknown

Photo: Photo: (c) Tomás Curtis, some rights reserved (CC BY-NC), uploaded by Tomás Curtis

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Rimmed Wart Lichen faces severe threats from air pollution and habitat degradation, as lichens are extremely sensitive to atmospheric contaminants and changes in air quality. Climate change is altering precipitation patterns and temperature regimes in its specialized habitats, while deforestation and urban development continue to destroy the old-growth forest ecosystems this species depends upon.

Threat summary

Habitat

This lichen species typically inhabits the bark of old-growth deciduous and mixed forests, particularly favoring mature trees in humid, shaded environments with stable microclimates. It requires areas with minimal air pollution and consistent moisture levels, often found in undisturbed forest ecosystems at various elevations.

TERRESTRIAL· major

Frequently asked questions

Why is Rimmed Wart Lichen classified as Critically Endangered?
Rimmed Wart Lichen is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Rimmed Wart Lichen faces severe threats from air pollution and habitat degradation, as lichens are extremely sensitive to atmospheric contaminants and changes in air quality. Climate change is altering precipitation patterns and temperature regimes in its specialized habitats, while deforestation and urban development continue to destroy the old-growth forest ecosystems this species depends upon.
Where does Rimmed Wart Lichen live?
Rimmed Wart Lichen occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Rimmed Wart Lichen?
The main threats to Rimmed Wart Lichen are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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