American Buckeye vs Common Button Lichen

Aesculus glabra compared with Buellia erubescens

Key Differences

American Buckeye is Least Concern while Common Button Lichen is Not Evaluated.

Taxonomic Classification

Rank	American Buckeye	Common Button Lichen
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Ascomycota (Sac Fungi)
Class	Magnoliopsida (Dicots)	Lecanoromycetes (Lecanoromycetes)
Order	Sapindales (Sapindales)	Caliciales (Caliciales)
Family	Sapindaceae	Caliciaceae
Genus	Aesculus	Buellia
Species	Aesculus glabra	Buellia erubescens

Conservation Status

American Buckeye

LC — Least Concern

Common Button Lichen

NE — Not Evaluated

Physical Characteristics

Attribute	American Buckeye	Common Button Lichen
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American Buckeye

Habitat

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

Range

Found in 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.

American Buckeye

The American Buckeye (Aesculus glabra) is a species in the genus Aesculus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.