Sieve-tooth Moss
Coscinodon cribrosus
Conservation status data sourced from the IUCN Red List of Threatened Species.
Photo: (c) Pavel Kacl, some rights reserved (CC BY), uploaded by Pavel Kacl
Taxonomy & Classification
Kingdom
Plantae
Phylum
Bryophyta
Class
Bryopsida
Order
Grimmiales
Family
Grimmiaceae
Genus
Coscinodon
Sieve-tooth Moss belongs to the family Grimmiaceae, order Grimmiales, within the Bryopsida class.
Species Profile
Species profile data sourced from the IUCN Red List of Threatened Species.
Sieve-tooth Moss faces severe threats from habitat destruction and degradation of its specialized rocky environments. Climate change and air pollution further compromise the delicate conditions required for this species' survival, while its extremely limited distribution makes it highly vulnerable to local extinctions.
Key Facts
Habitat & Distribution
Rocky outcrops, limestone cliffs, and calcareous stone walls in semi-arid to temperate regions. This moss requires specific moisture conditions and grows on exposed or semi-shaded mineral substrates with particular pH requirements.
Threats
IUCN Red List: Critically Endangered
Sieve-tooth Moss faces severe threats from habitat destruction and degradation of its specialized rocky environments. Climate change and air pollution further compromise the delicate conditions required for this species' survival, while its extremely limited distribution makes it highly vulnerable to local extinctions.
Air pollution and acid deposition
Climate change altering moisture regimes
Habitat destruction from quarrying and development
Invasive plant species competition
Recreational activities and trampling
National vs Global Threat Status
How this species is assessed at the national level compared to its IUCN global status (CR).
| Country | National Status | Global Status | Comparison |
|---|---|---|---|
| EU | LCLeast Concern | CRCritically Endangered | Lower local risk |
| EU | LCLeast Concern | CRCritically Endangered | Lower local risk |
National Red List data sourced from the National Red List Project (nationalredlist.org, ZSL) and country-specific Red List authorities.
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
National Red Lists: ZSL (2025). National Red List. Zoological Society of London. Available at: https://www.nationalredlist.org
This page: SpeciesRadar (2025). Sieve-tooth Moss (Coscinodon cribrosus). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/sieve-tooth-moss