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).