Birch Marble vs limestone fern

Apotomis betuletana compared with Gymnocarpium robertianum

Key Differences

• Birch Marble is Least Concern while limestone fern is Critically Endangered.

Taxonomic Classification

Rank	Birch Marble	limestone fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Tracheophyta
Class	Insecta (Insects)	Polypodiopsida (Polypodiopsida)
Order	Lepidoptera (Butterflies & Moths)	Polypodiales (Polypodiales)
Family	Tortricidae	Cystopteridaceae
Genus	Apotomis	Gymnocarpium
Species	Apotomis betuletana	Gymnocarpium robertianum

Conservation Status

Birch Marble

LC — Least Concern

limestone fern

CR — Critically Endangered

Physical Characteristics

Attribute	Birch Marble	limestone fern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Birch Marble

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Birch Marble

The Birch Marble (Apotomis betuletana) is a species in the genus Apotomis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇸🇪 Sweden