Blackboard Tree vs Bordered Screw-moss

Alstonia scholaris compared with Tortula marginata

Key Differences

• Blackboard Tree is Least Concern while Bordered Screw-moss is Endangered.

Taxonomic Classification

Rank	Blackboard Tree	Bordered Screw-moss
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Bryophyta
Class	Magnoliopsida (Dicots)	Bryopsida (Bryopsida)
Order	Gentianales (Gentianales)	Pottiales (Pottiales)
Family	Apocynaceae	Pottiaceae
Genus	Alstonia	Tortula
Species	Alstonia scholaris	Tortula marginata

Evolutionary Relationship

Blackboard Tree and Bordered Screw-moss share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Blackboard Tree

LC — Least Concern

Bordered Screw-moss

EN — Endangered

Physical Characteristics

Attribute	Blackboard Tree	Bordered Screw-moss
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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.

Bordered Screw-moss

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests spanning the Australasia and Oceanian realms.

Range

Distributed across Belgium, Luxembourg, New Zealand, Norway, and Portugal. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Bordered Screw-moss

The Bordered Screw-moss (Tortula marginata) is a species in the genus Tortula. It is currently classified as Endangered on the IUCN Red List. Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests spanning the Australasia and Oceanian realms.