Bighead knapweed vs star-thistle

Centaurea macrocephala compared with Centaurea calcitrapa

Key Differences

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

Taxonomic Classification

Rank	Bighead knapweed	star-thistle
Kingdom same	Plantae (Plants)	Plantae (Plants)
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 macrocephala	Centaurea calcitrapa

Evolutionary Relationship

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

Conservation Status

Bighead knapweed

NE — Not Evaluated

star-thistle

EX — Extinct

Physical Characteristics

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

Habitat & Geographic Range

Bighead knapweed

Habitat

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

Range

Found across Europe (6 countries) and North America (Canada, 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).

Bighead knapweed

The Bighead knapweed (Centaurea macrocephala) is a species in the genus Centaurea. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Shared Countries

Both species can be found in 8 countries:

🇧🇪 Belgium 🇨🇦 Canada 🇨🇿 Czech Republic 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇬🇧 United Kingdom 🇺🇸 United States