Blackboard Tree vs Broad-Leaved Ragwort

Alstonia scholaris compared with Senecio sarracenicus

Key Differences

• Blackboard Tree is Least Concern while Broad-Leaved Ragwort is Critically Endangered.

Taxonomic Classification

Rank	Blackboard Tree	Broad-Leaved Ragwort
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Gentianales (Gentianales)	Asterales (Daisies & Sunflowers)
Family	Apocynaceae	Asteraceae (Daisy Family)
Genus	Alstonia	Senecio
Species	Alstonia scholaris	Senecio sarracenicus

Evolutionary Relationship

Blackboard Tree and Broad-Leaved Ragwort share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Blackboard Tree

LC — Least Concern

Broad-Leaved Ragwort

CR — Critically Endangered

Physical Characteristics

Attribute	Blackboard Tree	Broad-Leaved Ragwort
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.

Broad-Leaved Ragwort

Habitat

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

Range

Distributed across Belgium, Denmark, Estonia, Latvia, and Sweden. Currently classified as Critically 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.

Broad-Leaved Ragwort

The Broad-Leaved Ragwort (Senecio sarracenicus) is a species in the genus Senecio. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.