Book Flapwort vs Compressed Flapwort

Nardia breidleri compared with Nardia compressa

Taxonomic Classification

Rank	Book Flapwort	Compressed Flapwort
Kingdom same	Plantae (растения)	Plantae (растения)
Phylum same	Marchantiophyta (печёночные мхи)	Marchantiophyta (печёночные мхи)
Class same	Jungermanniopsida (юнгерманиевые печёночники)	Jungermanniopsida (юнгерманиевые печёночники)
Order same	Jungermanniales (юнгерманиевые)	Jungermanniales (юнгерманиевые)
Family same	Gymnomitriaceae	Gymnomitriaceae
Genus same	Nardia	Nardia
Species	Nardia breidleri	Nardia compressa

Evolutionary Relationship

Book Flapwort and Compressed Flapwort share a common ancestor at the Genus level: Nardia.

Conservation Status

Book Flapwort

LC — Least Concern

Compressed Flapwort

LC — Least Concern

Physical Characteristics

Attribute	Book Flapwort	Compressed Flapwort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Book Flapwort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

Compressed Flapwort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Norway, and Sweden.

Book Flapwort

The Book Flapwort (Nardia breidleri) is a species in the genus Nardia. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

Compressed Flapwort

<em>Nardia compressa</em>, commonly called the Compressed Flapwort, is a leafy liverwort in the family Jungermanniaceae, a lineage of non-vascular land plants (division Marchantiophyta) that diverged from other embryophytes over 400 million years ago. This small, mat-forming bryophyte typically colonizes moist, acidic substrates along stream banks, seepages, and wet rock faces in cool-temperate habitats throughout Europe. Its flattened, overlapping leaves give the plant a compressed appearance, which inspired both its common and scientific names. Like all liverworts, <em>Nardia compressa</em> lacks true vascular tissue and absorbs water and nutrients directly through its leaf surfaces, deriving energy through photosynthesis rather than heterotrophic feeding. The species has been recorded in Belgium, Norway, and Sweden, suggesting an affinity for the moist, boreal and Atlantic climatic zones of northwestern and northern Europe. It is currently assessed as Least Concern by the IUCN, indicating no immediate extinction risk across its known range. Biological traits including individual lifespan, reproductive rates, and specific growth measurements remain poorly documented relative to vascular plant species, though liverworts are generally slow-growing perennial organisms tightly dependent on stable moisture regimes.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden