Alder vs limestone fern

Alnus glutinosa compared with Gymnocarpium robertianum

Key Differences

• Alder is Least Concern while limestone fern is Critically Endangered.

Taxonomic Classification

Rank	Alder	limestone fern
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Tracheophyta
Class	Magnoliopsida (Dicots)	Polypodiopsida (Polypodiopsida)
Order	Fagales (Beeches & Oaks)	Polypodiales (Polypodiales)
Family	Betulaceae	Cystopteridaceae
Genus	Alnus	Gymnocarpium
Species	Alnus glutinosa	Gymnocarpium robertianum

Evolutionary Relationship

Alder and limestone fern share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Alder

LC — Least Concern

limestone fern

CR — Critically Endangered

Physical Characteristics

Attribute	Alder	limestone fern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alder

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (India, Japan), Europe (6 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (Chile).

limestone fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Belgium, Canada, Norway, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Alder

The Alder (Alnus glutinosa) 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.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇨🇦 Canada 🇳🇴 Norway 🇸🇪 Sweden