Blackboard Tree vs Elf Ears Lichen

Alstonia scholaris compared with Normandina pulchella

Key Differences

Blackboard Tree is Least Concern while Elf Ears Lichen is Endangered.

Taxonomic Classification

Rank	Blackboard Tree	Elf Ears Lichen
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Ascomycota (Sac Fungi)
Class	Magnoliopsida (Dicots)	Eurotiomycetes (Eurotiomycetes)
Order	Gentianales (Gentianales)	Verrucariales (Verrucariales)
Family	Apocynaceae	Verrucariaceae
Genus	Alstonia	Normandina
Species	Alstonia scholaris	Normandina pulchella

Conservation Status

Blackboard Tree

LC — Least Concern

Elf Ears Lichen

EN — Endangered

Physical Characteristics

Attribute	Blackboard Tree	Elf Ears Lichen
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Elf Ears Lichen

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.