Xanthoria calcicola

Description

This foliose lichen is similar to Xanthoria parietina but tends to have a more orange hue and more contorted lobes. The centre of the thallus is densely isidiate with knobbly, convex isidia. Apothecia tend to be sparse or absent; when present the discs have roughened margins.

Identification difficulty
Habitat

Calcium-rich stonework or mortar

When to see it

All year.

UK Status

Common and widespread with a south-eastern bias.

VC55 Status

Common

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Leicestershire & Rutland Map

MAP KEY:

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

UK Map