Green Elfcup - Chlorociboria aeruginascens agg.


    Chlorociboria aeruginascens is a beautiful blue-green cup fungus. The cups can be stalked or unstalked and are 2 to 6 mm in diameter. It is more common to see the green stained wood than to actually see the fruiting bodies. We have treated this species as an aggregate because Chlorociboria aeruginascens and the similar but much rarer Chlorociboria aeruginosa can only be separated by microscopic examination.

    Similar Species

    Chlorociboria aeruginosa

    Identification difficulty

    On fallen branches of deciduous trees, especially oak.

    When to see it

    Mainly autumn, but occasionally seen at other times throughout the year.

    Life History

    The mycelium growing through the wood stains it conspicuously blue-green.

    UK Status

    Widespread and fairly frequent in Britain.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland, although exact data is difficult to obtain due to difficulty of identification.

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map