Stereocaulon botryosum Ach.

Stereocaulon botyosum is characterized by clustered pseudopodetia that branch from their bases and by the production of porphyrilic acid. This arctic-alpine species grows on siliceous rocks, less commonly on soil on shaded and humid stands. It is rare in central Europe. In the Czech Republic, it is considered extinct. The only records are from the 19th century (see the Catalogue Vězda & Liška 1999). It is not clear whether those data correspond to the current circumscription of the species.

taxonomic classification:

Ascomycota Lecanoromycetes Lecanorales Stereocaulaceae Stereocaulon

Red List (Liška & Palice 2010):RE – extinct
Red List (Malíček 2023):A – no recent data

Occurrence in the Czech Republic

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