Melampsora populnea

    Description

    Melampsora populnea is a rust fungus which causes pale orange-yellow, white edged swellings on Dog’s Mercury and, less often, on Annual Mercury. These may reach up to 2 cm across. These are most often found on leaves and on swollen and distorted petioles, but may also affect the stems.

    Identification difficulty
    Habitat

    Woodland and shaded places where Dog’s Mercury occurs.

    When to see it

    Anytime while the host plants ae in leaf.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    UK Map