Rinodina occulta (Körb.) Sheard

A minute Rinodina with an inconspicuous thallus and small black apothecia with black lecideine margin. The spores are small and between the Physcia and Milvina type (Mayrhofer & Poelt 1979). It occurs on vertical to overhanging acidic siliceous rocks, at places protected from rain, often accompanied by Lecanora orosthea (Wirth 1972). In Europe, the species is widely distributed, but rare. According to the available data, it is absent from the high European mountains. In the Czech Republic, it is known from a single locality, Dračí skály rock formation in the valley of the Oslava River in the Pošumaví region (Vondrák et al. 2006). There is also a single historical record from the Krkonoše Mts (Opiz 1856), however, it probably refers to the Polish area.

Literature: Mayrhofer H. & Poelt J. (1979): Die saxicolen Arten der Flechtengattung Rinodina in Europa. − J. Cramer, Vaduz, 186 p. Opiz P. M. (1856): Lichenologische Nachträge zu meinem Seznam rostlin Květeny české. − Lotos, Praha, 6: 19−22, 41−45 & 155−158. Vondrák J., Kocourková J., Palice Z. & Liška J. (2006): New and noteworthy lichens in the Czech Republic − genus Rinodina. − In: Lackovičová A., Guttová A., Lisická E. & Lizoň P. [eds], Central European lichens – diversity and threat, p. 109–117, Mycotaxon Ltd., Ithaca. Wirth V. (1972): Die Silikatflechten-Gemeinschaften im ausseralpinen Zentraleuropa. – Dissertationes Botanicae 17: 1–306.

taxonomic classification:

Ascomycota Lecanoromycetes Caliciales Physciaceae Rinodina

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

Occurrence in the Czech Republic

All records: 2, 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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