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Arnold's disc lichen
Scientific Name: Buellia arnoldii
Family: Physciaceae
Category: Lichen
Growth: Lichenous
Duration:
Other Names:
Buellia arnoldii
Also known as Arnold's disc lichen, Buellia arnoldii is a lichen species.
Considerations for Pets
- This lichen produces spherical discs (perithecia) in pits, which may be of interest to curious pets.
Considerations for Children
- This lichen produces spherical discs (perithecia) in pits, which may be of interest to curious children.
Taxonomy and Nomenclature
- Scientific Name: Buellia arnoldii Servit & Nadv.
- Common Name: Arnold's disc lichen, disc lichen, black disc lichen
- Family: Physciaceae
- Kingdom: Fungi (implied by "Lichen")
- Taxonomic Category: Lichen
- Genus: Buellia
- Order: Lecanorales
- Synonyms/Redirects: Biatora hypnophila
- Scientific Name Authorship: Arnold
Distribution and Habitat
- Found in Canada.
- Also mentioned in reference to the Greater Sonoran Desert Region, Mount Desert Island, Mazandaran, Haidmühle (Bavaria, Germany), Tasmania, Pacific Northwest, Kopaonik (Serbia), and Chile (but not listed in the checklist of lichens of Chile).
- Grows on hard limestone.
Morphological Characteristics
- Growth habit: Lichenous
- Apothecia emerging from areoles.
- Perithecia: spherical discs produced in pits.
- Disc: pale pink or brown to black, often piebald and dull, epruinose, 0.3-0.9 mm in diameter, sometimes pruinose.
- Margin: concolorous with or paler than the disc, at first.
- Apothecia: 0.4-0.7 mm in diameter, sessile.
Interactions with Other Organisms
- May be grazed by snails/slugs.
- Mentioned alongside other lichen species: Punctelia subrudecta, Cladonia macileata (cup), Buellia stillingiana (Stilling's disc), Rinodina pyrina (Ach.) Arnold, Buellia aethalea (Ach.) Th. Fr., Buellia erubescens Arnold, Pseudephebe minuscula (Nyl. ex Arnold) Brodo & D. Hawksw., Collema furfuraceum, (Arnold) Du Rietz, Lecidella stigmatea, (Ach.) Hertel & Leuckert, Parmotrema arnoldii, Bacidia arceutina (Ach.) Rehm & Arnold, B. heterochroa, Lecidea apochroeella Nyl., Lecidea leucothallina Arnold, Rinodina archaea (Ach.) Arnold, Rinodina arctica H. Magn, Rinodina corticola Arnold, Rinodina darrowii E.D., Caloplaca irrubescens (Arnold) Zahlbr., Hymenelia ceracea (Arnold) M. Choisy, Ochrolechia androgyna (Hoffm.) Arnold, Absconditella Voezda, Leucocarpia biatorella (Arnold) Vezda
Other Information
- Antifungal activity has been analyzed using the Bauer-Kirby disc diffusion assay on lichen extracts.
- Extracts have been tested in acetone, methanol, and chloroform solvents.
Resources and Further Information
- USDA, NRCS (Natural Resources Conservation Service)
- Lichens of North America
- Encyclopedia of Lichen Flora of the Greater Sonoran Desert Region
- Databases on tropical lichens