Blue Pouchwort
Calypogeia azurea
Blue Pouchwort (Calypogeia azurea) is a rare leafy liverwort distinguished by its distinctive blue-green coloration and characteristic pouch-like structures that give the species its common name. This small bryophyte forms delicate mats on moist substrates and plays a crucial role in microhabitat creation, providing shelter for microscopic invertebrates and contributing to nutrient cycling in specialized ecosystems.
34
Countries
Photo: iNaturalist: (c) John D Reynolds, some rights reserved (CC BY-NC), uploaded by John D Reynolds
Taxonomy & Classification
Kingdom
Plantae
Phylum
Marchantiophyta
Class
Jungermanniopsida
Order
Jungermanniales
Family
Calypogeiaceae
Genus
Calypogeia
Blue Pouchwort belongs to the family Calypogeiaceae, order Jungermanniales, within the Jungermanniopsida class.
Species Profile
Blue Pouchwort (Calypogeia azurea) is a rare leafy liverwort distinguished by its distinctive blue-green coloration and characteristic pouch-like structures that give the species its common name. This small bryophyte forms delicate mats on moist substrates and plays a crucial role in microhabitat creation, providing shelter for microscopic invertebrates and contributing to nutrient cycling in specialized ecosystems.
Blue Pouchwort (Calypogeia azurea) is critically endangered primarily due to habitat loss and degradation of its specialized wetland environments. This bryophyte species requires very specific moisture and substrate conditions that are increasingly threatened by human activities and climate change. Its extremely limited distribution makes it particularly vulnerable to local extinctions.
Key Facts
Habitat & Distribution
Blue Pouchwort occurs exclusively on rotting logs and decaying wood debris in old-growth temperate rainforests, particularly favoring partially shaded microsites with consistent moisture levels. The species requires the specific pH conditions and nutrient availability found in well-decomposed coniferous wood substrates.
Threats
IUCN Red List: Critically Endangered
Blue Pouchwort (Calypogeia azurea) is critically endangered primarily due to habitat loss and degradation of its specialized wetland environments. This bryophyte species requires very specific moisture and substrate conditions that are increasingly threatened by human activities and climate change. Its extremely limited distribution makes it particularly vulnerable to local extinctions.
Climate change and altered precipitation patterns
Habitat loss and fragmentation
Water table changes and drainage
Pollution and eutrophication
Trampling and recreational disturbance
Found in 34 Countries
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). Blue Pouchwort (Calypogeia azurea). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/blue-pouchwort