Caesar's Amanita vs Common Button Lichen

Amanita caesarea compared with Buellia erubescens

Key Differences

• Caesar's Amanita is Least Concern while Common Button Lichen is Not Evaluated.

Taxonomic Classification

Rank	Caesar's Amanita	Common Button Lichen
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum	Basidiomycota (Club Fungi)	Ascomycota (Sac Fungi)
Class	Agaricomycetes (Mushrooms)	Lecanoromycetes (Lecanoromycetes)
Order	Agaricales (Gilled Mushrooms)	Caliciales (Caliciales)
Family	Agaricaceae (Agarics)	Caliciaceae
Genus	Amanita (Amanitas)	Buellia
Species	Amanita caesarea	Buellia erubescens

Evolutionary Relationship

Caesar's Amanita and Common Button Lichen share a common ancestor at the Kingdom level: Fungi. (Fungi)

Conservation Status

Caesar's Amanita

LC — Least Concern

Common Button Lichen

NE — Not Evaluated

Physical Characteristics

Attribute	Caesar's Amanita	Common Button Lichen
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Caesar's Amanita

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Taiwan, and United States.

Common Button Lichen

Habitat

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

Range

Distributed across Norway, Portugal, Sweden, Taiwan, and United States.

Caesar's Amanita

The Caesar's Amanita (Amanita caesarea) is a species in the genus Amanita. It is currently classified as Least Concern on the IUCN Red List. Typically found in forest floors, decomposing wood, and soil ecosystems.

Common Button Lichen

<em>Buellia erubescens</em>, commonly known as the common button lichen, is a lichen species with documented occurrences across Asia, Europe, and North America, including countries such as Norway, Portugal, Sweden, Taiwan, and the United States. It typically colonizes diverse terrestrial surfaces, often found on bark, rock, or other substrates in temperate and boreal environments. Common button lichen belongs to the genus <em>Buellia</em> within the family Caliciaceae. As a crustose lichen, it typically forms tightly adhered, crust-like thalli on the surfaces it colonizes, making it characteristic of stable, undisturbed substrates. Biological traits such as average lifespan, thallus size, and biomass of this species remain poorly documented in the scientific literature. The species has not yet been formally evaluated by the IUCN, and its global conservation status therefore remains undetermined. Its occurrence across multiple continents suggests a wide ecological tolerance, though detailed population data and trend assessments are currently lacking for this taxon.

Shared Countries

Both species can be found in 2 countries:

🇹🇼 Taiwan 🇺🇸 United States