Curled Hook-moss
Palustriella commutata
Palustriella commutata, commonly known as curled hookmoss, is a plant that also goes by the binomial names Cratoneuron commutatum, Cratoneuron falcatum, Hypnum commutatum, and Hypnum falcatum.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Palustriella_commutata
Taxonomy & Classification
Kingdom
Plantae
Phylum
Bryophyta
Class
Bryopsida
Order
Hypnales
Family
Amblystegiaceae
Genus
Palustriella
Curled Hook-moss belongs to the family Amblystegiaceae, order Hypnales, within the Bryopsida class.
Species Profile
Palustriella commutata, commonly known as curled hookmoss, is a plant that also goes by the binomial names Cratoneuron commutatum, Cratoneuron falcatum, Hypnum commutatum, and Hypnum falcatum.
Curled Hook-moss faces significant threats from habitat degradation and loss of its specialized wetland environments. Climate change and altered hydrology from human activities are reducing the availability of suitable calcareous spring and seepage habitats. Water pollution and eutrophication further compromise the water quality conditions this species requires for survival.
Key Facts
Habitat & Distribution
Calcareous springs, seepages, and wet rock faces in mountainous and hilly regions, typically growing on limestone or other calcium-rich substrates. Also found along stream banks and in other permanently moist, mineral-rich environments with consistent water flow.
Threats
Altered hydrology from development
Habitat loss and degradation
Agricultural runoff contamination
Climate change impacts on water sources
Water pollution and eutrophication
National vs Global Threat Status
How this species is assessed at the national level compared to its IUCN global status (VU).
| Country | National Status | Global Status | Comparison |
|---|---|---|---|
| EU | LCLeast Concern | VUVulnerable | Lower local risk |
| EU | LCLeast Concern | VUVulnerable | 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). Curled Hook-moss (Palustriella commutata). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/curled-hook-moss