Plant Parasites of Europe

leafminers, galls and fungi

Urocystis avenastri

Urocystis avenastri (Massenot) Nannfeldt, 1959

on Avenula, Helictochloa


long striae between the veins of the leaves and leaf sheaths; when the epidermis ruptures a powdery brownish black mass of spore balls is released. The spore balls consist of 1-4 spores, completely covered by a layer of smaller sterile cells.

host plants

Poaceae, narrowly oligophagous

Avenula pubescens; Helictochloa versicolor.


Urocystis rytzii (Massenot) Müller, 1991 (Vánky).


Brandenburger (1985a: 809), Buhr (1964b), Klenke & Scholler (2015a), Kruse, Thiel, Beenken ao (2018d), Lotze-Engelhard (2010a), Scholz & Scholz (2013a), Tomasi (2014a), Vánky (1994a).

Last modified 13.xii.2022