Blackboard Tree vs limestone fern

Alstonia scholaris compared with Gymnocarpium robertianum

Key Differences

• Blackboard Tree is Least Concern while limestone fern is Critically Endangered.

Taxonomic Classification

Rank	Blackboard Tree	limestone fern
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Tracheophyta
Class	Magnoliopsida (Dicots)	Polypodiopsida (Polypodiopsida)
Order	Gentianales (Gentianales)	Polypodiales (Polypodiales)
Family	Apocynaceae	Cystopteridaceae
Genus	Alstonia	Gymnocarpium
Species	Alstonia scholaris	Gymnocarpium robertianum

Evolutionary Relationship

Blackboard Tree and limestone fern share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Blackboard Tree

LC — Least Concern

limestone fern

CR — Critically Endangered

Physical Characteristics

Attribute	Blackboard Tree	limestone fern
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.

limestone fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Belgium, Canada, Norway, and Sweden. 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.