Alpine Rock-Cress vs Ludwig's Thread-moss

Arabis alpina compared with Pohlia ludwigii

Key Differences

• Alpine Rock-Cress is Least Concern while Ludwig's Thread-moss is Near Threatened.

Taxonomic Classification

Rank	Alpine Rock-Cress	Ludwig's Thread-moss
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Bryophyta
Class	Magnoliopsida (Dicots)	Bryopsida (Bryopsida)
Order	Brassicales (Brassicales)	Bryales (Bryales)
Family	Brassicaceae	Mniaceae
Genus	Arabis	Pohlia
Species	Arabis alpina	Pohlia ludwigii

Evolutionary Relationship

Alpine Rock-Cress and Ludwig's Thread-moss share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Alpine Rock-Cress

LC — Least Concern

Ludwig's Thread-moss

NT — Near Threatened

Physical Characteristics

Attribute	Alpine Rock-Cress	Ludwig's Thread-moss
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alpine Rock-Cress

Habitat

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

Range

Widely distributed across Europe (10 countries), North America (Canada, United States), and South America (Argentina).

Ludwig's Thread-moss

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Alpine Rock-Cress

The Alpine Rock-Cress (Arabis alpina) is a species in the genus Arabis. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions. Widely distributed across Europe (10 countries), North America (Canada, United States), and South America (Argentina).

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden