The rust fungus Puccinia poarum galls the leaves of Colt's-foot (Tussilago farfara). The underside of the leaves have thickened areas bearing orange-red aecia and spermogonia.
Wherever Colt's-foot occurs.
When Colt's-foot is in leaf.
Widespread and locally frequent in Britain.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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