Blue star vs square-stemmed willowherb

Amsonia orientalis compared with Epilobium tetragonum

Key Differences

• Blue star is Critically Endangered while square-stemmed willowherb is Least Concern.

Taxonomic Classification

Rank	Blue star	square-stemmed willowherb
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Gentianales (Gentianales)	Myrtales (Myrtales)
Family	Apocynaceae	Onagraceae
Genus	Amsonia	Epilobium
Species	Amsonia orientalis	Epilobium tetragonum

Evolutionary Relationship

Blue star and square-stemmed willowherb share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Blue star

CR — Critically Endangered

square-stemmed willowherb

LC — Least Concern

Physical Characteristics

Attribute	Blue star	square-stemmed willowherb
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue star

Habitat

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

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).

Blue star

The Blue star (Amsonia orientalis) is a species in the genus Amsonia. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.