Rinodina excrescens Vain.

Rinodina with granular coralloid to squamulose thallus, resembling the unrelated species Protoparmelia hypotremella. From similar lichens, it is distinguished based on the presence of pannarin in the thallus (Pd+ orange). Apothecia are rare.

It occurs on deciduous tree bark, mainly oaks, in open forests or on solitary trees from low to lower-montane elevations. In the Czech Republic, R. excrescens has only been collected in a couple of localities, however, its sterile thalli are probably partly overlooked. Although its distributional range covers a great part of the Northern hemisphere, it is one of the rarest epiphytic Rinodina species in Europe.

Literature: Malíček J. & Palice Z. (2013): Lichens of the virgin forest reserve Žofínský prales (Czech Republic) and surrounding woodlands. – Herzogia 26: 253–292.

taxonomic classification:

Ascomycota Lecanoromycetes Caliciales Physciaceae Rinodina

Red List (Malíček 2023):C2 – strongly endangered

Occurrence in the Czech Republic

All records: 14, confirmed 14. 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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