Plant Parasites of Europe

leafminers, galls and fungi

Urocystis tothii

Urocystis tothii Vánky, 1977

on Juncus


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.

host plants

Juncaceae, (narrowly?) monophagous

Juncus articulatus, compressus, gerardi.


Brandenburger (1985a: 745), Denchev, Knudsen & Denchev (2020a), Klenke & Scholler (2015a), Vánky (1994a).

Last modified 6.iv.2023