Arthonia didyma is a lichen, a partnership between a fungus and a photosynthetic partner such as an alga. It belongs to the family Arthoniaceae, within the class Arthoniomycetes.
The species is native to Eurasia and North America, so it grows across two continents.
Distribution and Habitat
Arthonia didyma is native to Eurasia and North America.
Sightings of the species are most frequent in April. They stay high from May through October and fall to their lowest in December. Mapped sightings show where people have found the lichen, not how common it is across its range.
Photos
Photographs from via iNaturalist, licensed under CC0 1.0., by Julie Hilligsøe Lisby via iNaturalist, licensed under CC BY 4.0., and by Michel Langeveld via iNaturalist, licensed under CC BY 4.0., credited on each photo.
Ecology and classification
Classification
- Phylum
- Ascomycota
- Class
- Arthoniomycetes
- Order
- Arthoniales
- Family
- Arthoniaceae
- Genus
- Arthonia
- Species
- Arthonia didyma
Sources
- GBIF Species names and classification
- iNaturalist Photos
- Wikidata Common names and conservation status
- Wikipedia Summary extract
