Bitter Knight vs brittlestar

Tricholoma acerbum compared with Amphiura chiajei

Key Differences

• Bitter Knight is Endangered while brittlestar is Least Concern.

Taxonomic Classification

Rank	Bitter Knight	brittlestar
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Echinodermata (Echinoderms)
Class	Agaricomycetes (Mushrooms)	Ophiuroidea (Ophiuroidea)
Order	Agaricales (Gilled Mushrooms)	Amphilepidida (Amphilepidida)
Family	Tricholomataceae	Amphiuridae
Genus	Tricholoma	Amphiura
Species	Tricholoma acerbum	Amphiura chiajei

Conservation Status

Bitter Knight

EN — Endangered

brittlestar

LC — Least Concern

Physical Characteristics

Attribute	Bitter Knight	brittlestar
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bitter Knight

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

brittlestar

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Bitter Knight

The Bitter Knight (Tricholoma acerbum) is a species in the genus Tricholoma. It is currently classified as Endangered on the IUCN Red List. Typically found in forest floors, decomposing wood, and soil ecosystems.

brittlestar

The Brittlestar (Amphiura chiajei) 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 2 countries:

🇳🇴 Norway 🇸🇪 Sweden