Rinodina archaea (Ach.) Arnold

Rinodina archaea has Physconia-type spores and is very similar to R. trevisanii, but differs in thicker and more conspicuous thallus and larger spores. It typically occurs on hard weathered wood, only exceptionally on rough acidic bark of, e.g., birch and oak. Mayrhofer & Sheard (2007) summarized its distribution, showing its general decline and lack of recent data. There are historical records from the Czech Republic until the first half of the 20th century. However, because the taxonomic concept of R. archaea has been changing, those records are questionable. It was recorded on sycamore bark in the Černé jezero glacial cirque in the Šumava Mts (Palice 1999, as Porina hibernica) but the author himself suspects confusion with R. orculata. Recently, R. archaea was found in the valley of Úpořský potok (locality Týřov, Křivoklát region) on weathered hard wood of an exposed oak root in an open forest steppe. It comprised only a small thallus fragment with few apothecia growing together with another very rare lichen, Calicium abietinum.

Literature: Mayrhofer H. & Sheard J. W. (2007): Rinodina archaea (Physciaceae, lichenized Ascomycetes) and related species. – In: Frisch A., Lange U. & Staiger B. [eds], Lichenologische Nebenstunden Contributions to lichen taxonomy and ecology in honour of Klaus Kalb. Bibliotheca Lichenologica 96: 229–246. Palice Z. (1999): New and noteworthy records of lichens in the Czech Republic. – Preslia 71: 289–336.

Ascomycota → Lecanoromycetes → Caliciales → Physciaceae → Rinodina