Ajuga vs slender thistle

Ajuga reptans compared with Carduus tenuiflorus

Key Differences

• Ajuga is Endangered while slender thistle is Near Threatened.

Taxonomic Classification

Rank	Ajuga	slender 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	Carduus
Species	Ajuga reptans	Carduus tenuiflorus

Evolutionary Relationship

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

Conservation Status

Ajuga

EN — Endangered

slender thistle

NT — Near Threatened

Physical Characteristics

Attribute	Ajuga	slender 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.

slender thistle

Habitat

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

Range

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

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.

Shared Countries

Both species can be found in 10 countries:

🇦🇺 Australia 🇧🇪 Belgium 🇧🇷 Brazil 🇩🇰 Denmark 🇯🇵 Japan 🇳🇴 Norway 🇵🇹 Portugal 🇿🇦 South Africa 🇸🇪 Sweden 🇺🇸 United States