Urocystis poae-palustris Vánky 1976
Elongate narrow striae between the nerves of the leaf. The brownish black spore balls that are released here consist of 1-5 spores, entirely or partly wrapped in a layer of smaller sterile cells.
Poaceae, narrowly monophagous
Klenke & Scholler (2015a), Vánky (1994a).