Luisier's Tufa-moss
Gymnostomum viridulum
Gymnostomum viridulum is a species of moss in the family Pottiaceae. It has an almost cosmopolitan distribution.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Gymnostomum_viridulum
Taxonomy & Classification
Kingdom
Plantae
Phylum
Bryophyta
Class
Bryopsida
Order
Pottiales
Family
Pottiaceae
Genus
Gymnostomum
Luisier's Tufa-moss belongs to the family Pottiaceae, order Pottiales, within the Bryopsida class.
Species Profile
Gymnostomum viridulum is a species of moss in the family Pottiaceae. It has an almost cosmopolitan distribution.
Luisier's Tufa-moss is critically endangered due to its extremely restricted distribution to specific tufa-forming spring habitats that are highly vulnerable to hydrological changes and human disturbance. The species faces severe threats from water extraction, pollution, and habitat modification that can alter the delicate chemical conditions required for tufa formation and moss survival.
Key Facts
Threats
IUCN Red List: Critically Endangered
Luisier's Tufa-moss is critically endangered due to its extremely restricted distribution to specific tufa-forming spring habitats that are highly vulnerable to hydrological changes and human disturbance. The species faces severe threats from water extraction, pollution, and habitat modification that can alter the delicate chemical conditions required for tufa formation and moss survival.
Extremely small population size and restricted range
Habitat modification and disturbance
Pollution of spring water sources
Water extraction and hydrological changes
Climate change affecting spring hydrology
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). Luisier's Tufa-moss (Gymnostomum viridulum). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/luisiers-tufa-moss