Blue Bugle vs Brook Thistle

Ajuga genevensis compared with Cirsium rivulare

Key Differences

• Blue Bugle is Critically Endangered while Brook Thistle is Extinct.

Taxonomic Classification

Rank	Blue Bugle	Brook Thistle
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Lamiales (Lamiales)	Asterales (Daisies & Sunflowers)
Family	Lamiaceae	Asteraceae (Daisy Family)
Genus	Ajuga	Cirsium
Species	Ajuga genevensis	Cirsium rivulare

Evolutionary Relationship

Blue Bugle and Brook Thistle share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Blue Bugle

CR — Critically Endangered

Brook Thistle

EX — Extinct

Physical Characteristics

Attribute	Blue Bugle	Brook Thistle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Bugle

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 8 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Uzbekistan), Europe (7 countries), and North America (Canada, United States). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brook Thistle

Habitat

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

Range

Found across Europe (7 countries).

Blue Bugle

The Blue Bugle (Ajuga genevensis) is a species in the genus Ajuga. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 8 distinct biome types within the Palearctic biogeographic realm. Populations are also fo

Brook Thistle

The Brook Thistle (Cirsium rivulare) is a species in the genus Cirsium. It is currently classified as Extinct on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇫🇮 Finland 🇳🇴 Norway 🇸🇪 Sweden