Gymnosporangium confusum


    The rust fungus Gymnosporangium confusum produces pronounced growths (telial fruit-bodies) on the live wood of cultivated Juniper species such as Juniperus sabinae. These growths are dark brown when dry but swell and become lighter and more orange coloured when wet. 

    Identification difficulty
    Recording advice

    Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.


    On cultivated Juniper species (using pear and hawthorn as alternative host)

    When to see it

    Fruiting bodies on Juniper appear in late spring or summer.

    Life History

    Gymnosporangium confusum uses garden pear trees as an alternative host but also favours hawthorn.

    UK Status

    It appears to be occasional, but widespread in Britain but it is unclear whether it is rather uncommon or just under recorded.

    VC55 Status

    Rare or rarely recorded in Leicestershire and Rutland where there are few records.

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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