Caucasian Alder vs Cotton Thistle

Alnus subcordata compared with Onopordum acanthium

Key Differences

• Caucasian Alder is Least Concern while Cotton Thistle is Endangered.

Taxonomic Classification

Rank	Caucasian Alder	Cotton Thistle
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Fagales (Beeches & Oaks)	Asterales (Daisies & Sunflowers)
Family	Betulaceae	Asteraceae (Daisy Family)
Genus	Alnus	Onopordum
Species	Alnus subcordata	Onopordum acanthium

Evolutionary Relationship

Caucasian Alder and Cotton Thistle share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Caucasian Alder

LC — Least Concern

Cotton Thistle

EN — Endangered

Physical Characteristics

Attribute	Caucasian Alder	Cotton Thistle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Caucasian Alder

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.

Caucasian Alder

The Caucasian Alder (Alnus subcordata) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.