Cay Sua vs

Alstonia scholaris compared with Fuscidea praeruptorum

Key Differences

Cay Sua is Least Concern while is Vulnerable.

Taxonomic Classification

Rank	Cay Sua
Kingdom	Plantae (thực vật)	Fungi (nấm)
Phylum	Magnoliophyta (Flowering Plants)	Ascomycota (Sac Fungi)
Class	Magnoliopsida (Dicots)	Lecanoromycetes (Lecanoromycetes)
Order	Gentianales (Bộ Long đởm)	Umbilicariales (Umbilicariales)
Family	Apocynaceae	Fuscideaceae
Genus	Alstonia	Fuscidea
Species	Alstonia scholaris	Fuscidea praeruptorum

Conservation Status

Cay Sua

LC — Least Concern

VU — Vulnerable

Physical Characteristics

Attribute	Cay Sua
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cay Sua

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.

Habitat

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

Range

Distributed across Denmark, Norway, Sweden, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Cay Sua

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.

Fuscidea praeruptorum is a crustose lichen in the family Fuscideaceae, assessed as Vulnerable (VU). It grows on siliceous rock surfaces in stable, undisturbed habitats and is sensitive to air pollution and land use changes. Its vulnerable status reflects the restricted occurrence of suitable clean-air rocky substrates.