A relatively conspicuous genus member with the black umbilicate thallus, forming shiny areoles or rosettes. It is usually finely isidiate on the surface and forms little lobes on the margins. The species grows on calcareous and diabase rocks in associations with other cyanoliches. It prefers natural, sun-exposed outcrops and seepage rocks. Its centre of distribution is in Europe, especially its central part, where most of its localities are known (Jørgensen et al. 2013). However, even here the lichen occurs sparsely to rarely. In the Czech Republic, it has been recorded in the Prokopské údolí valley in Prague, in the Český kras Karst, the Křivoklát region and on conglomerate rocks in the valley of the river Rokytná near Moravský Krumlov.
Literature: Jørgensen P.M., Schultz M. & Guttová A. (2013): Validation of Anema tumidulum (Lichinaceae, lichenized Ascomycota), a widespread cyanophilic lichen. – Herzogia 26: 1–7.taxonomic classification:
All records: 24, confirmed 22. One click on a selected square displays particular record(s), including their source(s).