Blackboard Tree vs Carelessweed

Alstonia scholaris compared with Amaranthus spinosus

Key Differences

• Blackboard Tree is Least Concern while Carelessweed is Not Evaluated.

Taxonomic Classification

Rank	Blackboard Tree	Carelessweed
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Gentianales (Gentianales)	Caryophyllales (Caryophyllales)
Family	Apocynaceae	Amaranthaceae
Genus	Alstonia	Amaranthus
Species	Alstonia scholaris	Amaranthus spinosus

Evolutionary Relationship

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

Conservation Status

Blackboard Tree

LC — Least Concern

Carelessweed

NE — Not Evaluated

Physical Characteristics

Attribute	Blackboard Tree	Carelessweed
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.

Carelessweed

Habitat

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

Range

Widely distributed across Africa (20 countries), Asia (22 countries), Europe (23 countries), North America (6 countries), Oceania and the Pacific (11 countries), and South America (7 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.

Carelessweed

The Carelessweed (Amaranthus spinosus) is a species in the genus Amaranthus. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Shared Countries

Both species can be found in 3 countries:

🇫🇲 Micronesia 🇹🇼 Taiwan 🇺🇸 United States