Peltigera aphthosa (L.) Willd.

One of the three Czech Peltigera species with green thallus, which completely lacks veins on the lobe underside. It overgrows bryophytes on acidic oligotrophic soil, less often also on siliceous stones and rocks. Sometimes, the species grows directly on humus and soil. It is a boreal-montane to arctic-alpine element, occurring in central Europe more frequently only in the Alps. In the past, the lichen used to occur sparsely at middle to high elevations throughout the Czech Republic. However, it has significantly declined due to its sensitivity to environmental pollution (eutrophication, acid rain) and apparently also to mesoclimatic changes accompanying the changes in the landscape management. Currently, P. aphthosa may be found only in a few localities in the Šumava Mts.

Literature: Liška J., Dětinský R. & Palice Z. (1998): A project on distribution changes of lichens in the Czech Republic. – Sauteria 9: 351–360.

taxonomic classification:

Ascomycota Lecanoromycetes Peltigerales Peltigeraceae Peltigera

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

Occurrence in the Czech Republic

All records: 57, confirmed 53. 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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