Bitter Scalewort vs Broad Scalewort

Porella arboris-vitae compared with Porella obtusata

Key Differences

• Bitter Scalewort is Vulnerable while Broad Scalewort is Endangered.

Taxonomic Classification

Rank	Bitter Scalewort	Broad Scalewort
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Marchantiophyta (liverwort)	Marchantiophyta (liverwort)
Class same	Jungermanniopsida (Jungermanniopsida)	Jungermanniopsida (Jungermanniopsida)
Order same	Porellales (Porellales)	Porellales (Porellales)
Family same	Porellaceae	Porellaceae
Genus same	Porella	Porella
Species	Porella arboris-vitae	Porella obtusata

Evolutionary Relationship

Bitter Scalewort and Broad Scalewort share a common ancestor at the Genus level: Porella.

Conservation Status

Bitter Scalewort

VU — Vulnerable

Broad Scalewort

EN — Endangered

Physical Characteristics

Attribute	Bitter Scalewort	Broad Scalewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bitter Scalewort

Habitat

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

Range

Found across Asia (Taiwan) and Europe (5 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Broad Scalewort

Habitat

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

Range

Distributed across Norway, Portugal, Sweden, and United States. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Bitter Scalewort

The Bitter Scalewort (Porella arboris-vitae) is a species in the genus Porella. It is currently classified as Vulnerable on the IUCN Red List. Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Broad Scalewort

The Broad Scalewort (Porella obtusata) is a species in the genus Porella. It is currently classified as Endangered on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden