Arisaig Crisp-moss vs Clint Crisp-Moss

Tortella flavovirens compared with Tortella densa

Key Differences

• Arisaig Crisp-moss is Endangered while Clint Crisp-Moss is Least Concern.

Taxonomic Classification

Rank	Arisaig Crisp-moss	Clint Crisp-Moss
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Bryophyta	Bryophyta
Class same	Bryopsida (Bryopsida)	Bryopsida (Bryopsida)
Order same	Pottiales (Pottiales)	Pottiales (Pottiales)
Family same	Pottiaceae	Pottiaceae
Genus same	Tortella	Tortella
Species	Tortella flavovirens	Tortella densa

Evolutionary Relationship

Arisaig Crisp-moss and Clint Crisp-Moss share a common ancestor at the Genus level: Tortella.

Conservation Status

Arisaig Crisp-moss

EN — Endangered

Clint Crisp-Moss

LC — Least Concern

Physical Characteristics

Attribute	Arisaig Crisp-moss	Clint Crisp-Moss
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arisaig Crisp-moss

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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

Clint Crisp-Moss

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Sweden, and United States.

Arisaig Crisp-moss

The Arisaig Crisp-moss, Tortella flavovirens, is a species. It is currently assessed as endangered on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

Clint Crisp-Moss

Clint Crisp-moss, Tortella densa, is a small acrocarpous moss in the family Pottiaceae found on exposed limestone pavement, cliff ledges, and calcareous rock outcrops in temperate Europe, with strongholds in the Yorkshire Dales, the Burren of Ireland, and similar karst landscapes. The common name 'clint' refers to the raised limestone blocks of limestone pavement habitats, and 'crisp-moss' describes the crinkled, crisped appearance of the dry leaf margins. When moistened, the leaves uncurl and spread, revealing the characteristic nerve extending to the leaf tip. Tortella densa forms dense, cushion-like or turf-forming colonies on exposed limestone surfaces and in sheltered grykes (the fissures between clints), tolerating periodic desiccation and temperature extremes. Limestone pavement is a rare and highly specialized habitat that supports a distinctive community of plants, mosses, liverworts, and invertebrates, and is legally protected in the United Kingdom and Ireland as a priority habitat under European conservation law. The loss of limestone pavement to quarrying, the covering of surfaces by soil and vegetation succession, and the removal of clint-surface plants by collectors have threatened specialist bryophytes of this habitat. Clint Crisp-moss is considered of conservation concern in Britain and Ireland.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden