star-thistle vs Wig Knapweed

Centaurea calcitrapa compared with Centaurea phrygia

Key Differences

• star-thistle is Extinct while Wig Knapweed is Endangered.

Taxonomic Classification

Rank	star-thistle	Wig Knapweed
Kingdom same	Plantae (พืช)	Plantae (พืช)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (พืชใบเลี้ยงคู่)	Magnoliopsida (พืชใบเลี้ยงคู่)
Order same	Asterales (อันดับทานตะวัน)	Asterales (อันดับทานตะวัน)
Family same	Asteraceae (Daisy Family)	Asteraceae (Daisy Family)
Genus same	Centaurea	Centaurea
Species	Centaurea calcitrapa	Centaurea phrygia

Evolutionary Relationship

star-thistle and Wig Knapweed share a common ancestor at the Genus level: Centaurea.

Conservation Status

star-thistle

EX — Extinct

Wig Knapweed

EN — Endangered

Physical Characteristics

Attribute	star-thistle	Wig Knapweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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).

Wig Knapweed

Habitat

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

Range

Found across Europe (5 countries) and North America (United States). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇫🇷 France 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States