Blackboard Tree vs Elm Leech

Alstonia scholaris compared with Hypsizygus ulmarius

Key Differences

Blackboard Tree is Least Concern while Elm Leech is Critically Endangered.

Taxonomic Classification

Rank	Blackboard Tree	Elm Leech
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Basidiomycota (Club Fungi)
Class	Magnoliopsida (Dicots)	Agaricomycetes (Mushrooms)
Order	Gentianales (Gentianales)	Agaricales (Gilled Mushrooms)
Family	Apocynaceae	Lyophyllaceae
Genus	Alstonia	Hypsizygus
Species	Alstonia scholaris	Hypsizygus ulmarius

Conservation Status

Blackboard Tree

LC — Least Concern

Elm Leech

CR — Critically Endangered

Physical Characteristics

Attribute	Blackboard Tree	Elm Leech
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.

Elm Leech

Habitat

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

Range

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