Pleopsidium chlorophanum (Wahlenb.) Zopf

A lichen with a yellow placodiod thallus, convex lobes and convex apothecia with a soon-disappearing margin. It grows on acidic siliceous rocks, sometimes enriched with metals. It prefers vertical and overhanging surfaces. The species often occurs on relic exposed rocks, in primarily treeless areas. In Europe, it is mainly distributed in the northern-most part and montane areas and is considered an arctic-alpine species by many authors. In the Czech Republic, P. chlorophanum is scattered in most montane areas but has also been found at various localities at middle to lower elevations. The longest-known low-elevation locality is the Vraní skála rock near Zdice (Hilitzer 1925), but there are also other recent localities; in the Šumava foothills, the Brdy highlands or the Křivoklát and Ralsko regions. There have been various adventive findings of the species during the last decades, e.g., on worked rocks at cemeteries or observation towers in Germany (Wirth et al. 2013). Small thalli on obviously young substrates have also been observed at a couple of places in the Czech Republic.

Literature: Hilitzer A. (1925): Nové naleziště Acarospora chlorophana v Čechách. – Věda přírodní 6: 217–218. Wirth V., Hauck M. & Schultz M. (2013): Die Flechten Deutschlands. – Ulmer, Stuttgart.

taxonomic classification:

Ascomycota Lecanoromycetes Acarosporales Acarosporaceae Pleopsidium

Red List (Liška & Palice 2010):VU – vulnerable
Red List (Malíček 2023):C3 – endangered

Occurrence in the Czech Republic

All records: 59, confirmed 31. One click on a selected square displays particular record(s), including their source(s).


record after the selected year
record before the selected year
records without date
Doubtful and erroneous records are not displayed.
credible record
doubtful record
erroneous record
record without revision

Altitude preferences

Distribution Timeline

Substrate type

Substrate preferences

© Botanický ústav AV ČR, v. v. i. 2020–2024