Narrowleaf knotweed vs Red-knotgrass

Polygonum bellardii compared with Polygonum patulum

Taxonomic Classification

Rank	Narrowleaf knotweed	Red-knotgrass
Kingdom same	Plantae (식물)	Plantae (식물)
Phylum same	Magnoliophyta (피자식물문)	Magnoliophyta (피자식물문)
Class same	Magnoliopsida (목련강)	Magnoliopsida (목련강)
Order same	Caryophyllales (석죽목)	Caryophyllales (석죽목)
Family same	Polygonaceae	Polygonaceae
Genus same	Polygonum	Polygonum
Species	Polygonum bellardii	Polygonum patulum

Evolutionary Relationship

Narrowleaf knotweed and Red-knotgrass share a common ancestor at the Genus level: Polygonum.

Conservation Status

Narrowleaf knotweed

NE — Not Evaluated

Red-knotgrass

NE — Not Evaluated

Physical Characteristics

Attribute	Narrowleaf knotweed	Red-knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Narrowleaf knotweed

Habitat

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

Range

Widely distributed across Europe (12 countries), North America (United States), and Oceania and the Pacific (Australia).

Red-knotgrass

Habitat

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

Range

Widely distributed across Europe (16 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Colombia).

Shared Countries

Both species can be found in 13 countries:

🇦🇺 Australia 🇧🇪 Belgium 🇩🇰 Denmark 🇫🇷 France 🇱🇻 Latvia 🇱🇹 Lithuania 🇳🇱 Netherlands 🇳🇴 Norway 🇵🇹 Portugal 🇷🇺 Russia 🇸🇪 Sweden 🇬🇧 United Kingdom 🇺🇸 United States