Old Man'S Beard Lichen vs

Usnea barbata compared with Usnea cornuta

Key Differences

• Old Man'S Beard Lichen is Extinct while is Near Threatened.

Taxonomic Classification

Rank	Old Man'S Beard Lichen
Kingdom same	Fungi (nấm)	Fungi (nấm)
Phylum same	Ascomycota (Sac Fungi)	Ascomycota (Sac Fungi)
Class same	Lecanoromycetes (Lecanoromycetes)	Lecanoromycetes (Lecanoromycetes)
Order same	Lecanorales (Lecanorales)	Lecanorales (Lecanorales)
Family same	Parmeliaceae	Parmeliaceae
Genus same	Usnea	Usnea
Species	Usnea barbata	Usnea cornuta

Evolutionary Relationship

Old Man'S Beard Lichen and share a common ancestor at the Genus level: Usnea.

Conservation Status

Old Man'S Beard Lichen

EX — Extinct

NT — Near Threatened

Physical Characteristics

Attribute	Old Man'S Beard Lichen
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Old Man'S Beard Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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

Usnea cornuta is a fruticose lichen in the family Parmeliaceae, assessed as Near Threatened (NT). It forms shrubby, branching thalli that hang from tree branches and twigs, typically in humid forest environments. Like all Usnea species, it is highly sensitive to air pollution, particularly sulfur dioxide, making it a useful bioindicator of air quality.

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden