Description: This is an upland species of wet rock faces (for example, on schists) especially where the flush is weakly basic. It is also present around rivers, loughs and tarns where it grows along the rocky margins. The pale grey to pink thallus is marked by the presence of isidia (often densely so), usually one to each tiny areole (a piece of the thallus like in a jigsaw). In Ireland, it is known from Counties Kerry and Galway.

Key Identification Features:

• Grey-pink crustose thallus with an isidium protruding from each areole
• Wet, schistose rocks and rocky margins of waterbodies, for example, loughs, tarns.

Original text submitted by Vince J. Giavarini

Distribution Map from NBN: Koerberiella wimmeriana at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Koerberiella wimmeriana at iNaturalist World Species Observations database.