Blackboard Tree vs Brown Ear

Alstonia scholaris compared with Otidea cochleata

Key Differences

Blackboard Tree is Least Concern while Brown Ear is Vulnerable.

Taxonomic Classification

Rank	Blackboard Tree	Brown Ear
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Ascomycota (Sac Fungi)
Class	Magnoliopsida (Dicots)	Pezizomycetes (Pezizomycetes)
Order	Gentianales (Gentianales)	Pezizales (Pezizales)
Family	Apocynaceae	Otideaceae
Genus	Alstonia	Otidea
Species	Alstonia scholaris	Otidea cochleata

Conservation Status

Blackboard Tree

LC — Least Concern

Brown Ear

VU — Vulnerable

Physical Characteristics

Attribute	Blackboard Tree	Brown Ear
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.

Brown Ear

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (United States). Currently classified as Vulnerable 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.

Brown Ear

The Brown Ear (Otidea cochleata) is a species in the genus Otidea. It is currently classified as Vulnerable on the IUCN Red List. Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.