Biatora sphaeroidiza (Vain.) Printzen & Holien

A less conspicuous and easily misidentified lichen, slightly resembling the common species Micarea peliocarpa. It is one of the rarest representatives of the genus Biatora in the Czech Republic. It is rather a pioneer epiphytic lichen. It often grows on lower twigs and at bases of trunks with smooth bark in moist mountain forests, usually in places with long-lasting snow cover. In central Europe, it has been recorded on Fagus and Sorbus aucuparia, while in Scandinavia, where the majority of reports comes from, it often grows also on lower spruce twigs (Printzen 1995). There are less than ten collections from the Czech Republic. Practically all the records come from the 1990s, mainly from higher parts of the Šumava Mountains. Only one finding is from a mountain secondary beech forest on slopes of Mt Ždanidla (Printzen & Palice 1999). It usually grows in synusiae with other members of the genus (e.g. Biatora efflorescens and B. helvola). During the last two decades, this boreal lichen has not been confirmed in our territory and may theoretically decline.

Literature: Printzen C. (1995): Die Flechtegattung Biatora in Europa. – Bibliotheca Lichenologica 60: 1–275. Printzen C. & Palice Z. (1999): The distribution, ecology and conservational status of the lichen genus Biatora in central Europe. – Lichenologist 31: 319–335.

taxonomic classification:

Ascomycota Lecanoromycetes Lecanorales Ramalinaceae Biatora



Red List (Liška & Palice 2010):EN – endangered
Red List (Malíček 2023):C1 – critically endangered

Occurrence in the Czech Republic

All records: 1, confirmed 1. One click on a selected square displays particular record(s), including their source(s).

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Altitude preferences

Distribution Timeline

Substrate type

Substrate preferences

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