Blackboard Tree vs Dark Gray Boulder Lichen

Alstonia scholaris compared with Porpidia cinereoatra

Key Differences

Blackboard Tree is Least Concern while Dark Gray Boulder Lichen is Near Threatened.

Taxonomic Classification

Rank	Blackboard Tree	Dark Gray Boulder Lichen
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Ascomycota (Sac Fungi)
Class	Magnoliopsida (Dicots)	Lecanoromycetes (Lecanoromycetes)
Order	Gentianales (Gentianales)	Lecideales (Lecideales)
Family	Apocynaceae	Lecideaceae
Genus	Alstonia	Porpidia
Species	Alstonia scholaris	Porpidia cinereoatra

Conservation Status

Blackboard Tree

LC — Least Concern

Dark Gray Boulder Lichen

NT — Near Threatened

Physical Characteristics

Attribute	Blackboard Tree	Dark Gray Boulder 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.

Dark Gray Boulder Lichen

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.