Buellia disciformis

Buellia disciformis, the boreal button lichen, is a thin, bluish to pale gray rimose to areolate crustose lichen that grows on bark (rarely also on wood) in temperate forests in the northern USA and Europe, and at high altitudes in Arizona, down to 500 metres (1,600 ft) in coastal areas of California.[1]: 230  [2] Flat apothecia with black discs are .2-.7 mm in diameter and sessile (neither raised or immersed in the thallus), with noticeable lecideine margins.[2][1]: 230  Lichen spot tests are negative except for K+ yellow.[1]: 230  Secondary metabolites include atranorin, fulgidin, and sometimes traces of fulgoicin and norfulgoicin.[2] B. erubescens is similar and more often found on wood than the bark loving B. disciformis, and has smaller spores.[1]: 230 

Buellia disciformis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Caliciales
Family: Caliciaceae
Genus: Buellia
Species:
B. disciformis
Binomial name
Buellia disciformis
(Fr.) Mudd (1861)
Synonyms
  • Lecidea parasema var. disciformis Fr. (1826)

See also

References
  1. Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2
  2. Buellia disciformis, Lichen Flora of the Greater Sonoran Desert Region, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001, Archived 2014-11-09 at the Wayback Machine


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