Alpine Sulphur-Tresses vs Common Periwinkle

Alectoria ochroleuca compared with Littorina littorea

Taxonomic Classification

Rank	Alpine Sulphur-Tresses	Common Periwinkle
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Mollusca (Mollusks)
Class	Lecanoromycetes (Lecanoromycetes)	Gastropoda (Gastropoda)
Order	Lecanorales (Lecanorales)	Littorinimorpha (Littorinimorpha)
Family	Parmeliaceae	Littorinidae
Genus	Alectoria	Littorina
Species	Alectoria ochroleuca	Littorina littorea

Conservation Status

Alpine Sulphur-Tresses

LC — Least Concern

Common Periwinkle

LC — Least Concern

Physical Characteristics

Attribute	Alpine Sulphur-Tresses	Common Periwinkle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alpine Sulphur-Tresses

Habitat

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

Range

Distributed across Colombia, Norway, Sweden, and United States.

Common Periwinkle

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Europe (4 countries) and North America (Canada, United States).

Alpine Sulphur-Tresses

The Alpine Sulphur-Tresses (Alectoria ochroleuca) is a species in the genus Alectoria. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region. Distributed across Colombia, Norway, Sweden, and United States.

Common Periwinkle

Common Periwinkle (Littorina littorea) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States