Blackboard Tree vs Fringed Rock-Cress

Alstonia scholaris compared with Arabis hirsuta

Key Differences

• Blackboard Tree is Least Concern while Fringed Rock-Cress is Near Threatened.

Taxonomic Classification

Rank	Blackboard Tree	Fringed Rock-Cress
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Gentianales (Gentianales)	Brassicales (Brassicales)
Family	Apocynaceae	Brassicaceae
Genus	Alstonia	Arabis
Species	Alstonia scholaris	Arabis hirsuta

Evolutionary Relationship

Blackboard Tree and Fringed Rock-Cress share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Blackboard Tree

LC — Least Concern

Fringed Rock-Cress

NT — Near Threatened

Physical Characteristics

Attribute	Blackboard Tree	Fringed Rock-Cress
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.

Fringed Rock-Cress

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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 2 countries:

🇹🇼 Taiwan 🇺🇸 United States