Urocystis tothii Vánky, 1977
long swollen striae on the stem leaves; upon rupturing they release a blackish brown, powdery mass of spore balls. A spore ball consists of 1-8 spores, surrounded by a more or less complete layer of sterile cells. Spores 11-14 x 11-17 µm.
Juncaceae, (narrowwly?) monophagous
Juncus articulatus, compressus, gerardi.
Klenke & Scholler (2015a), Vánky (1994a).