Phyllactinia fraxini


    This is a powdery mildew occurring primarily on Ash (Fraxinus) species, but can also affect other members of the family Oleaceae (Olive and Lilac family).

    Identification difficulty
    Recording advice

    Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.


    On Ash and possibly other members of the Oleaceae family. (Olive and Lilac family).

    When to see it

    When the host species are in leaf.

    Life History

    To follow

    UK Status

    It appears to be quite widespread in England and Wales, but is not well recorded.

    VC55 Status

    Seems to be fairly frequent in Leicestershire and Rutland, although not regularly recorded.

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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