Opegrapha calcarea


Very variable, thallus thin, white or grey to pale pink or rust, usually more or less immersed in the substrate surface; fruit bodies irregularly nodular to slit-like, branched or stellate, lirellate apothecia. Part of a difficult group commonly requiring microscopic examination of the spores for accurate identification.

Identification difficulty

Often on limestone rocks or mortar, but can be found on other types of rock.

When to see it

All year round.

UK Status

Widespread in Britain, particularly common in coastal areas.

VC55 Status

Status in Leicestershire and Rutland not known.

Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map