Blackboard Tree vs Constricted Treacle Mustard

Alstonia scholaris compared with Erysimum contractum

Key Differences

• Blackboard Tree is Least Concern while Constricted Treacle Mustard is Vulnerable.

Taxonomic Classification

Rank	Blackboard Tree	Constricted Treacle Mustard
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	Erysimum
Species	Alstonia scholaris	Erysimum contractum

Evolutionary Relationship

Blackboard Tree and Constricted Treacle Mustard share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Blackboard Tree

LC — Least Concern

Constricted Treacle Mustard

VU — Vulnerable

Physical Characteristics

Attribute	Blackboard Tree	Constricted Treacle Mustard
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.

Constricted Treacle Mustard

Habitat

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

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.