alstonia vs

Alstonia congensis compared with Usnea cornuta

Key Differences

• alstonia is Least Concern while is Near Threatened.

Taxonomic Classification

Rank	alstonia
Kingdom	Plantae (พืช)	Fungi (เห็ดรา)
Phylum	Magnoliophyta (Flowering Plants)	Ascomycota (Sac Fungi)
Class	Magnoliopsida (พืชใบเลี้ยงคู่)	Lecanoromycetes (Lecanoromycetes)
Order	Gentianales (อันดับดอกหรีดเขา)	Lecanorales (Lecanorales)
Family	Apocynaceae	Parmeliaceae
Genus	Alstonia	Usnea
Species	Alstonia congensis	Usnea cornuta

Conservation Status

alstonia

LC — Least Concern

NT — Near Threatened

Physical Characteristics

Attribute	alstonia
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

alstonia

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found in Guinea.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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

alstonia

The Alstonia (Alstonia congensis) is a species in the genus Alstonia. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions. Found in Guinea.

Usnea cornuta is a fruticose lichen in the family Parmeliaceae, assessed as Near Threatened (NT). It forms shrubby, branching thalli that hang from tree branches and twigs, typically in humid forest environments. Like all Usnea species, it is highly sensitive to air pollution, particularly sulfur dioxide, making it a useful bioindicator of air quality.