Plant Parasites of Europe

leafminers, galls and fungi

Urocystis lagerheimii

Urocystis lagerheimii Bubák, 1916

on Juncus


swollen striae on the stem and the basal half of the leaves, several cm long and 1-2 mm wide; upon rupturing theay release a blackish brown, powdery mass of spore balls. A spore ball consists of 1-7 spores, surrounded by a complete layer of sterile cells. Spores 13-18 x 16-24 µm.

host plants

Juncaceae, (narrowly?) monophagous

Juncus compressus.


Brandenburger (1985a: 744), Buhr (1964b), Klenke & Scholler (2015a), Tomasi (2014a), Vánky (1994a).

Last modified 7.xii.2022