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disc lichen
Scientific Name: Buellia halonia
Family: Physciaceae
Category: Lichen
Growth: Lichenous
Duration:
Other Names:
Disc Lichens (Genus Buellia)
Lichens in the genus Buellia are commonly known as disc lichens or button lichens. This genus is widespread and includes approximately 450 species.
Considerations for Pets
- Some disc lichens produce apothecia which are disc or cup-shaped fruiting bodies involved in sexual reproduction in lichens.
- Lichens contain secondary metabolites, which are extractable using solvents and may have biological activity.
Taxonomy and Nomenclature
- Scientific Name: Buellia De Not.
- Common Names: Disc Lichens, Button Lichens
- Family: Physciaceae (in the case of Buellia nigra, Black Disc Lichen)
- Synonyms: Buelliopsis (in the case of Buellia papillata)
- Rank: Genus
Distribution and Habitat
- The genus has a widespread distribution.
- Examples of specific locations mentioned include Howard Co. for Stilling's Disc Lichen (Buellia stillingiana) and Chiricahua National Monument for New Mexican disc lichen.
Morphological Characteristics
- The thallus (main body) can be necrotic and may form a thalline veil.
- Discs (apothecia) are often black and epruinose (lacking a powdery surface covering).
- Apothecia are variable in shape but commonly disc- or saucer-shaped.
- Some species have apothecia that are yellow and disc-shaped.
Interactions with Other Organisms
- The text mentions the re-establishment of reindeer lichen species in Pinus-lichen clear-cut areas.
- Lichens can grow on live trees, such as poplar.
Antimicrobial Activity
- Some lichen extracts have potential antifungal effects as demonstrated by disc diffusion assays.
Further Information
- Catalogue of Life: 2012 Annual Checklist is a referenced data source.
- British Lichen Society - BLS Lichen Database is mentioned.