Compressed Flapwort vs ladder flapwort

Nardia compressa compared with Nardia scalaris

Key Differences

• Compressed Flapwort is Least Concern while ladder flapwort is Vulnerable.

Taxonomic Classification

Rank	Compressed Flapwort	ladder flapwort
Kingdom same	Plantae (식물)	Plantae (식물)
Phylum same	Marchantiophyta (우산이끼문)	Marchantiophyta (우산이끼문)
Class same	Jungermanniopsida (망울이끼강)	Jungermanniopsida (망울이끼강)
Order same	Jungermanniales (망울이끼목)	Jungermanniales (망울이끼목)
Family same	Gymnomitriaceae	Gymnomitriaceae
Genus same	Nardia	Nardia
Species	Nardia compressa	Nardia scalaris

Evolutionary Relationship

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

Conservation Status

Compressed Flapwort

LC — Least Concern

ladder flapwort

VU — Vulnerable

Physical Characteristics

Attribute	Compressed Flapwort	ladder flapwort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Compressed Flapwort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Norway, and Sweden.

ladder flapwort

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and North America (United States). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇸🇪 Sweden