Thelomma occidentale

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Taxonavigation: Caliciales 

Superregnum: Eukaryota
Regnum: Fungi
Subregnum: Dikarya
Divisio: Ascomycota
Subdivisio: Pezizomycotina
Classis: Lecanoromycetes
Subclassis: Lecanoromycetidae
Ordo: Caliciales

Familia: Caliciaceae
Genus: Thelomma
Species: Thelomma occidentale


Thelomma occidentale (Herre) Tibell, 1976

Substrate and ecology: On wood, preferably fence posts, sea level to 600 meters

World distribution: Southern Alaska to California

Sonoran distribution: Southern California and Baja California

  • Cyphelium occidentale Herre, Proc. Wash. Acad. Sci. 12: 62 (1910)


  • Tibell, Bot. Notiser 129(3): 237 (1976)
  • Tibell, L. and Ryan, B.D. (2004) Thelomma (pp. 533-536) In: Nash III, T.H.; Ryan, B.D.; Diederich, P.; Gries, C. and Bungartz, F. (eds.), Lichen Flora of the Greater Sonoran Desert Region, Vol. 2. Lichens Unlimited, Arizona State University, Tempe, Arizona, 742 pages.   (RLL List # 196 / Rec. # 25967 - Recent Literature on Lichens) (Description of Thelomma occidentale: p. 535) (Color photo: in photo section of vol. 2)

Links to photos[edit]

Vernacular names[edit]

English: Western thelomma lichen