American Tearthumb vs Dotted Knotweed

Persicaria sagittata compared with Persicaria punctata

Taxonomic Classification

Rank	American Tearthumb	Dotted Knotweed
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Caryophyllales (Caryophyllales)	Caryophyllales (Caryophyllales)
Family same	Polygonaceae	Polygonaceae
Genus same	Persicaria	Persicaria
Species	Persicaria sagittata	Persicaria punctata

Evolutionary Relationship

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

Conservation Status

American Tearthumb

LC — Least Concern

Dotted Knotweed

LC — Least Concern

Physical Characteristics

Attribute	American Tearthumb	Dotted 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).

Dotted Knotweed

Habitat

Inhabits tropical and subtropical grasslands and savannas and deserts and xeric shrublands within the Neotropic biogeographic realm.

Range

Found across North America (6 countries) and South America (Colombia).

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 2 countries:

🇨🇦 Canada 🇺🇸 United States