Blackboard Tree vs Knotgrass

Alstonia scholaris compared with Paspalum distichum

Taxonomic Classification

Rank	Blackboard Tree	Knotgrass
Kingdom same	Plantae (식물)	Plantae (식물)
Phylum same	Magnoliophyta (피자식물문)	Magnoliophyta (피자식물문)
Class	Magnoliopsida (목련강)	Liliopsida (백합강)
Order	Gentianales (용담목)	Poales (벼목)
Family	Apocynaceae	Poaceae (Grass Family)
Genus	Alstonia	Paspalum
Species	Alstonia scholaris	Paspalum distichum

Evolutionary Relationship

Blackboard Tree and Knotgrass share a common ancestor at the Phylum level: Magnoliophyta. (피자식물문)

Conservation Status

Blackboard Tree

LC — Least Concern

Knotgrass

LC — Least Concern

Physical Characteristics

Attribute	Blackboard Tree	Knotgrass
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.

Knotgrass

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests, among 8 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (8 countries), Asia (21 countries), Europe (21 countries), North America (4 countries), Oceania and the Pacific (5 countries), and South America (4 countries).

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 3 countries:

🇫🇲 Micronesia 🇹🇼 Taiwan 🇺🇸 United States