Black Knapweed vs Brook-Side Alder

Centaurea nigra compared with Alnus serrulata

Key Differences

Black Knapweed is Not Evaluated while Brook-Side Alder is Least Concern.

Taxonomic Classification

Rank	Black Knapweed	Brook-Side Alder
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Asterales (Daisies & Sunflowers)	Fagales (Beeches & Oaks)
Family	Asteraceae (Daisy Family)	Betulaceae
Genus	Centaurea	Alnus
Species	Centaurea nigra	Alnus serrulata

Evolutionary Relationship

Black Knapweed and Brook-Side Alder share a common ancestor at the Class level: Magnoliopsida. (Dicots)

View Class: Magnoliopsida

Conservation Status

Black Knapweed

NE — Not Evaluated

Brook-Side Alder

LC — Least Concern

Physical Characteristics

Attribute	Black Knapweed	Brook-Side Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Knapweed

Habitat

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

Range

Widely distributed across Asia (Japan), Europe (7 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Chile).

Brook-Side Alder

Habitat

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

Range

Distributed across Canada and United States.

Black Knapweed

The Black Knapweed (Centaurea nigra) is a species in the genus Centaurea. Typically found in diverse terrestrial habitats from tropical forests to temperate regions. Its geographic range spans Widely distributed across Asia (Japan), Europe (7 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Chile).

Brook-Side Alder

The Brook-Side Alder (Alnus serrulata) 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.