Beard Lichen vs Blackboard Tree

Usnea subgracilis compared with Alstonia scholaris

Key Differences

• Beard Lichen is Not Evaluated while Blackboard Tree is Least Concern.

Taxonomic Classification

Rank	Beard Lichen	Blackboard Tree
Kingdom	Fungi (Fungi)	Plantae (plantas)
Phylum	Ascomycota (Sac Fungi)	Magnoliophyta (Flowering Plants)
Class	Lecanoromycetes (Lecanoromycetes)	Magnoliopsida (Dicots)
Order	Lecanorales (Lecanorales)	Gentianales (Gentianales)
Family	Parmeliaceae	Apocynaceae
Genus	Usnea	Alstonia
Species	Usnea subgracilis	Alstonia scholaris

Conservation Status

Beard Lichen

NE — Not Evaluated

Blackboard Tree

LC — Least Concern

Physical Characteristics

Attribute	Beard Lichen	Blackboard Tree
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Beard Lichen

Habitat

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

Range

Distributed across Norway and United States.

Blackboard Tree

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

Range

Distributed across Micronesia, Taiwan, and United States.

Beard Lichen

The Beard Lichen (Usnea subgracilis) is a species in the genus Usnea. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Blackboard Tree

The Blackboard Tree (Alstonia scholaris) is a species in the genus Alstonia. It is currently classified as Least Concern on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Oceanian biogeographic realm.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States