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disc lichen
Scientific Name: Buellia turgescens
Family: Physciaceae
Category: Lichen
Growth: Lichenous
Duration:
Other Names:
Disc Lichen (Genus Buellia and Others)
The term "disc lichen" or "button lichen" is commonly used to refer to lichens in the genus Buellia, although other genera may also feature disc-shaped structures. This group of lichens is characterized by a widespread distribution and includes a diverse range of species.
Considerations for Pets
- Some disc lichens contain necrotic thalline material.
- The lichen produces circular, yellow disk-like structures.
Scientific Classification
- Genus: Buellia and others (e.g., Aethalia, Capitis-regnum, Lecanoroides).
- Family: Physciaceae (for Buellia nigra), Megasporaceae (for one unidentified specimen).
- Symbol: BUELL (for Buellia).
Common Names
- Disc Lichen
- Button Lichen
- Black Disc Lichen (for Buellia nigra)
- Common Button Lichen (synonymous with Stilling's Disc Lichen)
- Rock Disk Lichen
Distribution and Habitat
- Disc lichens exhibit a widespread distribution.
- Observed on the Diamond Coast.
- Found in Chiricahua National Monument.
- Observed in Howard County.
- Seen growing on a live poplar tree in South Glenmore Park.
Morphological Characteristics
- Disc lichens are named for their disc-shaped apothecia (fruiting bodies).
- Apothecia are often black, epruinose (lacking a powdery surface covering), and may be disc- or cup-shaped.
- The thallus (main body) can be crustose, growing closely attached to the substrate.
- Some species produce circular, yellow disk-like apothecia.
Quirky Facts
- Lichens have been extracted in acetone, methanol, and ethanol for study, and tested for antimicrobial activity.
- Apothecia colors on the disc can be used as an aid to lichen identification.
Interactions with Other Organisms
- Studies investigate the re-establishment rate of reindeer lichen species following soil preparation in clear-cut areas.
- Some lichen extracts have shown potential antifungal effects.
Synonyms and Related Taxa
- Buelliopsis papillata is listed as an alternative name for Buellia papillata.
- Stilling's Disc Lichen is synonymous with Common Button Lichen.
Specific Species Mentioned
- Buellia amphidexia
- Buellia capitis-regnum
- Buellia halonia
- Buellia imshaugii
- Buellia melanochroa
- Buellia nigra
- Buellia papillata
- Buellia stillingiana
Further Information
- Catalogue of Life: 2012 Annual Checklist
- Botanical Society of South Africa
- NEBC LICHEN WALK