Ash-coloured Scotch Thistle vs Cotton Thistle

Onopordum cinereum compared with Onopordum acanthium

Key Differences

• Ash-coloured Scotch Thistle is Least Concern while Cotton Thistle is Endangered.

Taxonomic Classification

Rank	Ash-coloured Scotch Thistle	Cotton 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	Onopordum	Onopordum
Species	Onopordum cinereum	Onopordum acanthium

Evolutionary Relationship

Ash-coloured Scotch Thistle and Cotton Thistle share a common ancestor at the Genus level: Onopordum.

Conservation Status

Ash-coloured Scotch Thistle

LC — Least Concern

Cotton Thistle

EN — Endangered

Physical Characteristics

Attribute	Ash-coloured Scotch Thistle	Cotton Thistle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ash-coloured Scotch Thistle

Habitat

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

Cotton Thistle

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Georgia, India, Japan), Europe (22 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (Argentina, Brazil, Chile). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Ash-coloured Scotch Thistle

Ash-coloured scotch thistle (Onopordum cinereum) is a species in the genus Onopordum. It is listed as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.