American Tearthumb vs Nepal Knotweed

Persicaria sagittata compared with Persicaria nepalensis

Key Differences

• American Tearthumb is Least Concern while Nepal Knotweed is Not Evaluated.

Taxonomic Classification

Rank	American Tearthumb	Nepal Knotweed
Kingdom same	Plantae (植物)	Plantae (植物)
Phylum same	Magnoliophyta (被子植物門)	Magnoliophyta (被子植物門)
Class same	Magnoliopsida (モクレン綱)	Magnoliopsida (モクレン綱)
Order same	Caryophyllales (ナデシコ目)	Caryophyllales (ナデシコ目)
Family same	Polygonaceae	Polygonaceae
Genus same	Persicaria	Persicaria
Species	Persicaria sagittata	Persicaria nepalensis

Evolutionary Relationship

American Tearthumb and Nepal Knotweed share a common ancestor at the Genus level: Persicaria.

Conservation Status

American Tearthumb

LC — Least Concern

Nepal Knotweed

NE — Not Evaluated

Physical Characteristics

Attribute	American Tearthumb	Nepal Knotweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American Tearthumb

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (Canada, United States).

Nepal Knotweed

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (Malaysia, Taiwan, Timor-Leste), Europe (6 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Papua New Guinea), and South America (Colombia, Venezuela).

American Tearthumb

The American Tearthumb (Persicaria sagittata) is a species in the genus Persicaria. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Shared Countries

Both species can be found in 7 countries:

🇧🇪 Belgium 🇨🇦 Canada 🇫🇷 France 🇳🇱 Netherlands 🇹🇼 Taiwan 🇬🇧 United Kingdom 🇺🇸 United States