Urocystis helvetica (Ciferri) Scholz & Scholz, 1988
Fungi, Basidiomycota, Ustilaginomycetes, Urocystidales
Elongated narrow blisters between the nerves of the leaf; initially covered by the epidermis, then lead-coloured. The brownish black spore balls that are released here consist of 1-4 spores, completely wrapped in a layer of smaller sterile cells.
Klenke & Scholler (2015a), Vánky (1994a).