Cay Sua vs Prostrate knotweed

Alstonia scholaris compared with Polygonum aviculare

Key Differences

• Cay Sua is Least Concern while Prostrate knotweed is Not Evaluated.

Taxonomic Classification

Rank	Cay Sua	Prostrate knotweed
Kingdom same	Plantae (thực vật)	Plantae (thực vật)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Gentianales (Bộ Long đởm)	Caryophyllales (Bộ Cẩm chướng)
Family	Apocynaceae	Polygonaceae
Genus	Alstonia	Polygonum
Species	Alstonia scholaris	Polygonum aviculare

Evolutionary Relationship

Cay Sua and Prostrate knotweed share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Cay Sua

LC — Least Concern

Prostrate knotweed

NE — Not Evaluated

Physical Characteristics

Attribute	Cay Sua	Prostrate knotweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cay Sua

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.

Prostrate knotweed

Habitat

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

Range

Widely distributed across Africa (9 countries), Asia (8 countries), Europe (11 countries), North America (6 countries), Oceania and the Pacific (Australia, Solomon Islands), and South America (7 countries).

Cay Sua

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