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disc lichen
Scientific Name: Buellia rubifaciens
Family: Physciaceae
Category: Lichen
Growth: Lichenous
Duration:
Other Names:
Disc Lichen (Genus Buellia)
Lichens in the genus Buellia are commonly known as disc lichens or button lichens. They are a widespread group of lichens, encompassing approximately 450 species.
Considerations for Pets
- Some disc lichens contain necrotic thalline material.
Considerations for Children
- Some disc lichens contain necrotic thalline material.
Taxonomy and Nomenclature
- Scientific Name: Buellia De Not.
- Common Names: Disc Lichen, Button Lichen, Common Button Lichen, Black Disc Lichen, New Mexican disc lichen
- Family: Physciaceae
- Group: Lichen
Distribution and Habitat
- The genus has a widespread distribution.
- Observed on the Diamond Coast.
- Found in Chiricahua National Monument.
- Observed in Howard Co.
- Rock Disk Lichen written about in New Hampshire Garden Solutions.
Morphological Characteristics
- The "disc" refers to the apothecia, a disc or cup-shaped fruiting body involved in sexual reproduction in lichens. These apothecia produce fungal spores used in lichen identification.
- Apothecia are variable in shape but commonly disc- or saucer-shaped.
- Some species produce circular, yellow disk-like apothecia.
- The disc can be black and epruinose (lacking a powdery surface).
- Lichens in this genus are arbitrarily classified into three to seven growth forms that do not reflect, which is generally shaped like a disc, usually with a rim around the edge.
Species
- Buellia amphidexia Imshaug ex R.C. Harris
- Buellia capitis-regnum W.A. Weber
- Buellia imshaugii
- Buellia melanochroa
- Buellia nigra (Black Disc Lichen)
- Buellia papillata (Also known as Buelliopsis papillata)
- Buellia stillingiana (Stilling's Disc Lichen, also known as Common Button Lichen)
- Buellia halonia
Interactions with Other Organisms
- Used in studies to measure re-establishment rate of reindeer lichen species following conventional disc trenching and HuMinMix soil preparation in Pinus-lichen clear-cut.
Antimicrobial Activity
- The lichen was extracted in acetone, methanol, and ethanol and tested for in vitro antimicrobial activity.
- Some studies have found that lichen extracts have potential antifungal effects when tested using disc diffusion methods.
Further Information
- Catalogue of Life: 2012 Annual Checklist
- British Lichen Society - BLS Lichen Database