California alder vs slender thistle

Alnus rhombifolia compared with Carduus tenuiflorus

Key Differences

• California alder is Least Concern while slender thistle is Near Threatened.

Taxonomic Classification

Rank	California alder	slender 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	Carduus
Species	Alnus rhombifolia	Carduus tenuiflorus

Evolutionary Relationship

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

Conservation Status

California alder

LC — Least Concern

slender thistle

NT — Near Threatened

Physical Characteristics

Attribute	California alder	slender thistle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

California alder

Habitat

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

Range

Found in Canada.

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.

California alder

The California alder (Alnus rhombifolia) 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.