Collema crispum

    Description

    Small thallus of greenish brown to black overlapping lobes, slightly swollen when moist. Lobe margins may be ascending, wavy, entire or crenate, never swollen.

    Habitat

    On damp, calcareous substrates; walls, crumbling mortar, rocks.

    When to see it

    All year round.

    UK Status

    Most records seem to come from the southern half of Britain.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    UK Map