Bitter Scalewort vs Brook-Side Alder

Porella arboris-vitae compared with Alnus serrulata

Key Differences

• Bitter Scalewort is Vulnerable while Brook-Side Alder is Least Concern.

Taxonomic Classification

Rank	Bitter Scalewort	Brook-Side Alder
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Marchantiophyta (liverwort)	Magnoliophyta (Flowering Plants)
Class	Jungermanniopsida (Jungermanniopsida)	Magnoliopsida (Dicots)
Order	Porellales (Porellales)	Fagales (Beeches & Oaks)
Family	Porellaceae	Betulaceae
Genus	Porella	Alnus
Species	Porella arboris-vitae	Alnus serrulata

Evolutionary Relationship

Bitter Scalewort and Brook-Side Alder share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Bitter Scalewort

VU — Vulnerable

Brook-Side Alder

LC — Least Concern

Physical Characteristics

Attribute	Bitter Scalewort	Brook-Side Alder
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.

Brook-Side Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Canada and United States.

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.

Brook-Side Alder

The Brook-Side Alder (Alnus serrulata) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.