Blackboard Tree vs Cuman Ragweed

Alstonia scholaris compared with Ambrosia psilostachya

Key Differences

• Blackboard Tree is Least Concern while Cuman Ragweed is Not Evaluated.

Taxonomic Classification

Rank	Blackboard Tree	Cuman Ragweed
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	Ambrosia
Species	Alstonia scholaris	Ambrosia psilostachya

Evolutionary Relationship

Blackboard Tree and Cuman Ragweed share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Blackboard Tree

LC — Least Concern

Cuman Ragweed

NE — Not Evaluated

Physical Characteristics

Attribute	Blackboard Tree	Cuman Ragweed
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.

Cuman Ragweed

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (Iran, Japan, Taiwan), Europe (18 countries), and North America (Canada, United States).

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