Stook Grimmia
Schistidium trichodon
Conservation status data sourced from the IUCN Red List of Threatened Species.
Taxonomy & Classification
Kingdom
Plantae
Phylum
Bryophyta
Class
Bryopsida
Order
Grimmiales
Family
Grimmiaceae
Genus
Schistidium
Stook Grimmia 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.
Stook Grimmia faces severe threats from habitat degradation and loss due to air pollution, acid rain, and climate change affecting its specialized rocky substrates. The species' extremely limited distribution and small population size make it highly vulnerable to local extinctions from environmental disturbances and human activities in its restricted range.
Key Facts
Habitat & Distribution
Stook Grimmia grows on exposed siliceous rocks, cliff faces, and boulder surfaces in montane and subalpine environments. The species typically occurs on acidic rock substrates in areas with specific moisture and light conditions at higher elevations.
Threats
IUCN Red List: Critically Endangered
Stook Grimmia faces severe threats from habitat degradation and loss due to air pollution, acid rain, and climate change affecting its specialized rocky substrates. The species' extremely limited distribution and small population size make it highly vulnerable to local extinctions from environmental disturbances and human activities in its restricted range.
Air pollution and acid rain
Climate change and altered precipitation patterns
Extremely limited distribution and small population size
Habitat destruction from quarrying and development
Trampling and disturbance from recreational activities
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). Stook Grimmia (Schistidium trichodon). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/stook-grimmia