Glyceria maxima, Belgium, prov. Antwerp, Balen, Griesbroek © Carina Van Steenwinkel

gall

Sori form long, dark parallel striae over the leaves, sometimes also the sheaths and culm; they contain an olive-brown, powdery mass of spores. Spores 3-6 µm, smooth. The fungus is systemic; infected plants usually do not flower.

host plants

Poaceae, monophagous

Glyceria arundinacea, declinata, fluitans, lithuanica, maxima, nemoralis, notata.

Losa España reports the species also from Catabrosa aquatica; in the illustration he presents the spores are in irregular clumps, what reminds of Jamesdicksonia dactylidis, but the size of the spores clearly points to filiformis.

synonyms

Ustilago longissima (Sowerby) Meyen, 1841.

references

Ainsworth & Sampson (1950a), Almaraz (1998a), Astiz Gasso, Lovisolo & Perelló (2015a), Brandenburger (1985a: 764), Buhr (1964b), Chevassut (1992a), Doppelbaur & Doppelbaur (1973a), Gönczö & Révay (1981a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2019a), Losa España (1942a, 1944a), Lutz & Vánky (2009a), Savchenko & Heluta (2012a), Scholler & Schubert (1993a), Scholz & Scholz (2013a), Tomasi (2014a), Tóth (1994a), Vanderweyen & Fraiture (2014a), Vánky (1994a), Vánky & Abbasi (2013a), Woods, Chater, Smith ao (2018a), Zwetko (1993a).