Squarrose knapweed vs star-thistle

Centaurea virgata compared with Centaurea calcitrapa

Key Differences

• Squarrose knapweed is Not Evaluated while star-thistle is Extinct.

Taxonomic Classification

Rank	Squarrose knapweed	star-thistle
Kingdom same	Plantae (planta)	Plantae (planta)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Asterales (Daisies & Sunflowers)	Asterales (Daisies & Sunflowers)
Family same	Asteraceae (Daisy Family)	Asteraceae (Daisy Family)
Genus same	Centaurea	Centaurea
Species	Centaurea virgata	Centaurea calcitrapa

Evolutionary Relationship

Squarrose knapweed and star-thistle share a common ancestor at the Genus level: Centaurea.

Conservation Status

Squarrose knapweed

NE — Not Evaluated

star-thistle

EX — Extinct

Physical Characteristics

Attribute	Squarrose knapweed	star-thistle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Squarrose knapweed

Habitat

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

Range

Distributed across France, Sweden, and United States.

star-thistle

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (India, Japan), Europe (18 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia, New Zealand), and South America (Argentina, Brazil, Chile).

Shared Countries

Both species can be found in 3 countries:

🇫🇷 France 🇸🇪 Sweden 🇺🇸 United States