American Tearthumb vs Curlytop Knotweed

Persicaria sagittata compared with Persicaria lapathifolia

Taxonomic Classification

Rank	American Tearthumb	Curlytop Knotweed
Kingdom same	Plantae (planta)	Plantae (planta)
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 lapathifolia

Evolutionary Relationship

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

Vista Genus: Persicaria

Conservation Status

American Tearthumb

LC — Least Concern

Curlytop Knotweed

LC — Least Concern

Physical Characteristics

Attribute	American Tearthumb	Curlytop 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).

Curlytop Knotweed

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, flooded grasslands and savannas, and deserts and xeric shrublands spanning the Australasia and Afrotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Madagascar, Namibia, South Africa), Europe (10 countries), North America (United States), Oceania and the Pacific (Papua New Guinea), and South America (Brazil).

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.