Tongues of Fire and Crown of Thorns - two juniper related rusts

The fungi outlined in our August Fungus of the Month profile are the rust fungi Gymnosporangium clavariiforme and G.cornutum. They are associated with juniper and their alternate hosts, rowan and hawthorn. Have a look at the full profile page to learn more.

If you come across juniper while searching for these species, please consider contributing to Plantlife's Scottish Juniper Survey. This survey, among other things, aims to increase our understanding of the juniper disease Phytophthora austrocedrae. Please follow the simple measures outlined in the survey form to prevent spreading this pathogen.

As usual, please keep an eye out for this fungus and then either let us know you've found it or submit the record to your local fungus group. Also, remember that the ever growing list of 'Fungus of the Month' profiles is available here, ordered alphabetically or by its highlight month. We are always keen to hear about new records for any of these species at any time.