Urocystis avenastri (Massenot) Nannfeldt, 1959

on Avenula, Helictochloa

gall

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.

hostplants

Poaceae, narrowly oligophagous

Avenula pubescens; Helictochloa versicolor.

synonyms

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

references

Buhr (1964b), Klenke & Scholler (2015a), Lotze-Engelhard (2010a), Scholz & Scholz (2013a), Tomasi (2014a), Vánky (1994a).

mod 26.vii.2018