Arnold Hawthorn vs Brook Alder

Crataegus mollis compared with Alnus maritima

Key Differences

• Arnold Hawthorn is Least Concern while Brook Alder is Endangered.

Taxonomic Classification

Rank	Arnold Hawthorn	Brook Alder
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Rosales (Roses & Allies)	Fagales (Beeches & Oaks)
Family	Rosaceae (Rose Family)	Betulaceae
Genus	Crataegus	Alnus
Species	Crataegus mollis	Alnus maritima

Evolutionary Relationship

Arnold Hawthorn and Brook Alder share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Arnold Hawthorn

LC — Least Concern

Brook Alder

EN — Endangered

Physical Characteristics

Attribute	Arnold Hawthorn	Brook Alder
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arnold Hawthorn

Habitat

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

Range

Distributed across Czech Republic, Lithuania, Norway, Russia, and United States.

Brook Alder

Habitat

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

Range

Distributed across Belgium, France, Netherlands, and United Kingdom. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Arnold Hawthorn

The Arnold Hawthorn, Crataegus mollis, is a species. It is currently assessed as least concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Brook Alder

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