Ustilago serpens (Karsten) Lindeberg, 1959
Stem and leaf sheaths, sometimes also the leaves, malformed and curled, with raised streaks that rupture and release masses of dark brown spores. The spores measure 12-15 x 13-19 µm; they are coarsely verrucose.
According to Klenke & Scholler also Brachypodium.
Ustilago aculeata (Ule) Liro, 1915.
Almaraz (1998a), Kabaktepe & Bahçecioğlu (2012b), Klenke & Scholler (2015a), Kruse (2014a, 2019a), Redfern & Shirley (2011a), Savchenko & Heluta (2012a), Scholz & Scholz (2013a), Spooner & Legon (2006a), Tomasi(2014a), Vanderweyen & Fraiture (2014a), Vánky (1994a), Vánky & Abbasi (2013a), Woods, Chater, Smith ao (2018a).