Urocystis agropyri (Preuss) Fischer von Waldheim, 1867
on Elymus, Elytrigia
Elytrigia repens, Belgium, prov. Limbourg, Kinrooi, Stamprooierbroek, de Zig, 18.v.2021 © Carina Van Steenwinkel: infected plant
leaves with sori
freshly opened sori, and a somewhat older one: blackish brown and brown
opened sorus between two still closed ones
spore balls
detail
gall
Elongate narrow blisters between the nerves of the leaf. The brownish black spore balls that are released here consist of 1-2(4) spores, wrapped in a layer of smaller sterile, pale yellow cells.
host plants
Poaceae, narrowly monophagous
Agropyron cristatum; Elymus alaskanus subsp. scandicus, caninus; Elytrigia atherica, intermedia, juncea, repens; Leymus arenarius; Psathyrostachys juncea
Buhr adds Briza; this is not plausible; that also applies to a reference to Vulpia alopecuros by Almaraz.
synonyms
Urocystis agropyri-juncei (Viennot-Bourgin) Zogg, 1986
references
Ainsworth & Sampson (1950a), Almaraz (1998a), Brandenburger (1985a: 780), Buhr (1964b), Denchev & Denchev (2016a), Denchev, Knudsen & Denchev (2020a), Dietrich (2013a, 2016b), Klenke (2002a), Klenke & Scholler (2015a), Kruse (2014a, 2019a), Lotze-Engelhard (2010a), Melgarejo Nárdiz, García-Jiménez, Jordá Gutiérrez ao (2010a), Redfern & Shirley (2011a), Savchenko & Heluta (2012a), Scholz & Scholz (2013a), Vanderweyen & Fraiture (2014a), Vánky (1994a), Vánky & Abbasi (2013a), Woods, Chater, Smith ao (2018a).