Spear-Leaved Willowherb vs square-stemmed willowherb

Epilobium lanceolatum compared with Epilobium tetragonum

Key Differences

• Spear-Leaved Willowherb is Near Threatened while square-stemmed willowherb is Least Concern.

Taxonomic Classification

Rank	Spear-Leaved Willowherb	square-stemmed willowherb
Kingdom same	Plantae (식물)	Plantae (식물)
Phylum same	Magnoliophyta (피자식물문)	Magnoliophyta (피자식물문)
Class same	Magnoliopsida (목련강)	Magnoliopsida (목련강)
Order same	Myrtales (도금양목)	Myrtales (도금양목)
Family same	Onagraceae	Onagraceae
Genus same	Epilobium	Epilobium
Species	Epilobium lanceolatum	Epilobium tetragonum

Evolutionary Relationship

Spear-Leaved Willowherb and square-stemmed willowherb share a common ancestor at the Genus level: Epilobium.

Conservation Status

Spear-Leaved Willowherb

NT — Near Threatened

square-stemmed willowherb

LC — Least Concern

Physical Characteristics

Attribute	Spear-Leaved Willowherb	square-stemmed willowherb
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Spear-Leaved Willowherb

Habitat

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

Range

Distributed across Belgium, Norway, and Portugal. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

square-stemmed willowherb

Habitat

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

Range

Widely distributed across Europe (8 countries), North America (Canada), and Oceania and the Pacific (Australia).

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇵🇹 Portugal