Phylum: Ascomycota Family: Mycosphaerellaceae
Ramularia purpurascens G. Winter
A common parasite on the leaves of Winter Heliotrope Petasites fragrans
References:

Fungi Outer Hebrides Phylum: Ascomycota Family: Mycosphaerellaceae
Ramularia purpurascens G. Winter
A common parasite on the leaves of Winter Heliotrope Petasites fragrans
References:
