Boar Thistle vs Brook Thistle

Cirsium arvense compared with Cirsium rivulare

Key Differences

• Boar Thistle is Least Concern while Brook Thistle is Extinct.

Taxonomic Classification

Rank	Boar Thistle	Brook Thistle
Kingdom same	Plantae (植物)	Plantae (植物)
Phylum same	Magnoliophyta (被子植物門)	Magnoliophyta (被子植物門)
Class same	Magnoliopsida (モクレン綱)	Magnoliopsida (モクレン綱)
Order same	Asterales (キク目)	Asterales (キク目)
Family same	Asteraceae (Daisy Family)	Asteraceae (Daisy Family)
Genus same	Cirsium	Cirsium
Species	Cirsium arvense	Cirsium rivulare

Evolutionary Relationship

Boar Thistle and Brook Thistle share a common ancestor at the Genus level: Cirsium.

Conservation Status

Boar Thistle

LC — Least Concern

Brook Thistle

EX — Extinct

Physical Characteristics

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

Habitat & Geographic Range

Boar Thistle

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 8 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (South Africa), Asia (5 countries), Europe (14 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (Chile).

Brook Thistle

Habitat

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

Range

Found across Europe (7 countries).

Boar Thistle

The Boar Thistle (Cirsium arvense) is a species in the genus Cirsium. It is currently classified as Least Concern on the IUCN Red List. Native to Australia, Belgium, Bulgaria, Canada, Chile.

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 7 countries:

🇧🇪 Belgium 🇫🇮 Finland 🇫🇷 France 🇳🇱 Netherlands 🇳🇴 Norway 🇸🇪 Sweden 🇬🇧 United Kingdom