Bitter Scalewort vs Blackboard Tree

Porella arboris-vitae compared with Alstonia scholaris

Key Differences

• Bitter Scalewort is Vulnerable while Blackboard Tree is Least Concern.

Taxonomic Classification

Rank	Bitter Scalewort	Blackboard Tree
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Marchantiophyta (liverwort)	Magnoliophyta (Flowering Plants)
Class	Jungermanniopsida (Jungermanniopsida)	Magnoliopsida (Dicots)
Order	Porellales (Porellales)	Gentianales (Gentianales)
Family	Porellaceae	Apocynaceae
Genus	Porella	Alstonia
Species	Porella arboris-vitae	Alstonia scholaris

Evolutionary Relationship

Bitter Scalewort and Blackboard Tree share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Bitter Scalewort

VU — Vulnerable

Blackboard Tree

LC — Least Concern

Physical Characteristics

Attribute	Bitter Scalewort	Blackboard Tree
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.

Blackboard Tree

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

Range

Distributed across Micronesia, Taiwan, 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.

Blackboard Tree

The Blackboard Tree (Alstonia scholaris) is a species in the genus Alstonia. It is currently classified as Least Concern on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

Shared Countries

Both species can be found in 1 countries:

🇹🇼 Taiwan