Ajuga vs Brook Thistle

Ajuga reptans compared with Cirsium rivulare

Key Differences

• Ajuga is Endangered while Brook Thistle is Extinct.

Taxonomic Classification

Rank	Ajuga	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 reptans	Cirsium rivulare

Evolutionary Relationship

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

Conservation Status

Ajuga

EN — Endangered

Brook Thistle

EX — Extinct

Physical Characteristics

Attribute	Ajuga	Brook Thistle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ajuga

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (South Africa), Asia (Japan), Europe (6 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (Brazil, Colombia). Currently classified as 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).

Ajuga

The Ajuga (Ajuga reptans) is a species in the genus Ajuga. It is currently classified as Endangered on the IUCN Red List. Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 11 distinct biome types. Populations are also found in montane and highland environment.

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