Cottontail Foam Lichen vs Finger-scale foam lichen

Stereocaulon paschale compared with Stereocaulon dactylophyllum

Key Differences

• Cottontail Foam Lichen is Critically Endangered while Finger-scale foam lichen is Vulnerable.

Taxonomic Classification

Rank	Cottontail Foam Lichen	Finger-scale foam lichen
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 same	Stereocaulaceae	Stereocaulaceae
Genus same	Stereocaulon	Stereocaulon
Species	Stereocaulon paschale	Stereocaulon dactylophyllum

Evolutionary Relationship

Cottontail Foam Lichen and Finger-scale foam lichen share a common ancestor at the Genus level: Stereocaulon.

Conservation Status

Cottontail Foam Lichen

CR — Critically Endangered

Finger-scale foam lichen

VU — Vulnerable

Physical Characteristics

Attribute	Cottontail Foam Lichen	Finger-scale foam lichen
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cottontail Foam Lichen

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.

Finger-scale foam lichen

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 Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Shared Countries

Both species can be found in 5 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇺🇸 United States