brittlestar vs Greater knapweed

Amphiura filiformis compared with Centaurea scabiosa

Key Differences

• brittlestar is Least Concern while Greater knapweed is Near Threatened.

Taxonomic Classification

Rank	brittlestar	Greater knapweed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Echinodermata (Echinoderms)	Magnoliophyta (Flowering Plants)
Class	Ophiuroidea (Ophiuroidea)	Magnoliopsida (Dicots)
Order	Amphilepidida (Amphilepidida)	Asterales (Daisies & Sunflowers)
Family	Amphiuridae	Asteraceae (Daisy Family)
Genus	Amphiura	Centaurea
Species	Amphiura filiformis	Centaurea scabiosa

Conservation Status

brittlestar

LC — Least Concern

Greater knapweed

NT — Near Threatened

Physical Characteristics

Attribute	brittlestar	Greater knapweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brittlestar

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Greater knapweed

Habitat

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

Range

Widely distributed across Europe (7 countries), North America (Canada, United States), and Oceania and the Pacific (Australia). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

brittlestar

The Brittlestar (Amphiura filiformis) is a species in the genus Amphiura. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden