Lecidea auriculata Th. Fr.

A mountain to arctic-alpine species, reported rarely from the Czech Republic, with distinctly black fruiting bodies attached to the thallus, which often have a massive undulate margin. Its typical habitat is on low acidic stones, semi-immersed in the ground in open, wind-exposed parts of mountains. The lichen may be identified microscopically mainly by the character of exciple, which is formed by thin, branched and cross-linked hyphae (seen after KOH application), and also by the shape (elongated-cylindrical) and size of the ascospores (Hertel 1995). The thallus may be differently developed, some of the specimens with an abnormally developed thallus resemble the little-known taxon L. sauteri. The latter has been reported only from its type locality, from overhangs in the alpine level of the Austrian Alps. However, it is possible that it is only a habitat modification in this case (Hertel 1995).

From the Czech Republic, the lichen has so far only been published in sociological works – from the Králický Sněžník without further specification (Klement 1956) and, with a degree of uncertainty, from the Obří důl valley and Mt Malý Šišák in the Krkonoše Mountains (Wirth 1972, as Lecidea cf. auriculata). Several recent unpublished records also come from the Krkonoše and Šumava Mts.

Literature: Klement O. (1956): Zur Flechtenvegetation des Glatzer Schneeberges. – Přírodovědný sborník Ostravského kraje 17: 196–212. Wirth V. (1972): Die Silikatflechten-Gemeinschaften im ausseralpinen Zentraleuropa. – Dissertationes Botanicae 17: 1–306. Hertel H. (1995): Schlüssel für die Arten der Flechtenfamilie Lecideaceae in Europa. – Bibliotheca Lichenologica 58: 137–180.

taxonomic classification:

Ascomycota Lecanoromycetes Lecanorales Lecideaceae Lecidea

Red List (Liška & Palice 2010):DD – data deficient
Red List (Malíček 2023):C1 – critically endangered

Occurrence in the Czech Republic

All records: 4, confirmed 2. 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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