vs

Arthonia calcarea compared with Arthonia punctiformis

Key Differences

• is Near Threatened while is Vulnerable.

Taxonomic Classification

Rank
Kingdom same	Fungi (เห็ดรา)	Fungi (เห็ดรา)
Phylum same	Ascomycota (Sac Fungi)	Ascomycota (Sac Fungi)
Class same	Arthoniomycetes (Arthoniomycetes)	Arthoniomycetes (Arthoniomycetes)
Order same	Arthoniales (Arthoniales)	Arthoniales (Arthoniales)
Family same	Arthoniaceae	Arthoniaceae
Genus same	Arthonia	Arthonia
Species	Arthonia calcarea	Arthonia punctiformis

Evolutionary Relationship

and share a common ancestor at the Genus level: Arthonia.

Conservation Status

NT — Near Threatened

VU — Vulnerable

Physical Characteristics

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

Habitat & Geographic Range

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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

Habitat

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

Range

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

Arthonia calcarea is a crustose lichen that grows on calcareous rock surfaces, limestone outcrops, and old mortar in sheltered situations. It forms a thin, white to grey thallus with small, dark, irregular apothecia embedded within. Near Threatened, this species is sensitive to habitat disturbance, air pollution, and the removal of old calcareous stone structures.

Arthonia punctiformis is a species in the genus Arthonia. It is listed as Vulnerable on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden