Alpine Sulphur-Tresses vs Pixie Foam

Alectoria ochroleuca compared with Stereocaulon pileatum

Key Differences

• Alpine Sulphur-Tresses is Least Concern while Pixie Foam is Critically Endangered.

Taxonomic Classification

Rank	Alpine Sulphur-Tresses	Pixie Foam
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum same	Ascomycota (Sac Fungi)	Ascomycota (Sac Fungi)
Class same	Lecanoromycetes (Lecanoromycetes)	Lecanoromycetes (Lecanoromycetes)
Order same	Lecanorales (Lecanorales)	Lecanorales (Lecanorales)
Family	Parmeliaceae	Stereocaulaceae
Genus	Alectoria	Stereocaulon
Species	Alectoria ochroleuca	Stereocaulon pileatum

Evolutionary Relationship

Alpine Sulphur-Tresses and Pixie Foam share a common ancestor at the Order level: Lecanorales. (Lecanorales)

Conservation Status

Alpine Sulphur-Tresses

LC — Least Concern

Pixie Foam

CR — Critically Endangered

Physical Characteristics

Attribute	Alpine Sulphur-Tresses	Pixie Foam
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.

Pixie Foam

Habitat

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

Range

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

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.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States