Waterawlwort
Subularia aquatica
Conservation status data sourced from the IUCN Red List of Threatened Species.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Subularia_aquatica
Taxonomy & Classification
Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Brassicales
Family
Brassicaceae
Genus
Subularia
Waterawlwort belongs to the family Brassicaceae, order Brassicales, within the Magnoliopsida class.
Species Profile
Species profile data sourced from the IUCN Red List of Threatened Species.
Waterawlwort faces severe threats from habitat degradation and loss of its specialized aquatic environments. Climate change and human activities are reducing the availability of suitable shallow water habitats, while water pollution and eutrophication degrade remaining populations.
Key Facts
Habitat & Distribution
Shallow margins of oligotrophic lakes, ponds, and slow-moving streams with sandy or gravelly substrates. The species typically grows as a submerged aquatic plant in clear, nutrient-poor waters at depths of 0.5-3 meters.
Threats
IUCN Red List: Critically Endangered
Waterawlwort faces severe threats from habitat degradation and loss of its specialized aquatic environments. Climate change and human activities are reducing the availability of suitable shallow water habitats, while water pollution and eutrophication degrade remaining populations.
Climate change impacts on water levels
Habitat loss and degradation
Water pollution and eutrophication
Competition from invasive species
Human disturbance of aquatic habitats
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). Waterawlwort (Subularia aquatica). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/waterawlwort