Puccinia lagenophorae

    Description

    Puccinia lagenophorae is a bright orange rust fungus which forms on the stems and leaves of Common Groundsel (Senecio vulgaris) causing swelling. It may also be found on Oxford Ragwort (Senecio squalidus). The orange patches bear the aecia, which appear as cup like structures. In the autumn dark telia may sometimes appear amongst the orange aecia.

    Identification difficulty
    Habitat

    On Common Groundsel (Senecio vulgaris) and also found on Oxford Ragwort (Senecio squalidus).

    When to see it

    Usually observed in spring and summer.

    UK Status

    Originally of Australian origin, and only known in the UK since 1961. It is now widespread and fairly frequent in Britain.

    VC55 Status

    Believed to be fairly frequent in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    UK Map