Physconia grisea

    Description

    Thallus is pale grey or brownish when dry but becomes greener when wet, usually coarsely pruinose. Fan-shaped, overlapping lobes, under surface whitish with pale, simple rhizines (only Physconia species with pale rhizines). Granular soralia may spread to cover the thallus centre. Apothecia are rare.

    Identification difficulty
    Habitat

    Found on nutrient-rich and often dusty, rocks, cement and trees.

    When to see it

    All year round.

    UK Status

    Widespread and fairly frequent in Britain.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    UK Map