Synonymy:
Uredo segetum α hordei Pers., Tent. disp. meth. fung. (Lipsiae): 57 (1797)
Erysibe vera α hordei (Pers.) Wallr., Fl. crypt. Germ. (Norimbergae) 2: 217 (1833)
Ustilago segetum var. hordei (Pers.) Rabenh., Klotzschii Herb. Viv. Mycol., Edn Nov, Ser. Sec., Cent. 4: no. 397 (1857)
Uredo segetum var. hordei (Pers.) Sacc., Syll. Fung. (Abellini) 9: 283 (1891)
Ustilagidium hordei (Pers.) Herzberg, Beitr. Physiol. Morph. Nieder. Organ. 5: 7 (1895)
Uredo hordei (Pers.) Mussat, in Saccardo, Syll. Fung. (Abellini) 15: 435 (1901)

Uredo carbo DC., Fl. franç., Edn 3 (Paris) 5/6: 76 (1815)
Ustilago carbo (DC.) Tul. & C. Tul., Annls Sci. Nat., Bot., sér. 3 7: 78 (1847)

Peziza decipiens Wallr., Fl. crypt. Germ. (Norimbergae) 2: 466 (1833)
Tapesia decipiens (Wallr.) Sacc., Fl. crypt. Germ. (Norimbergae) 1: no. 2487 (1889)
Ustilago decipiens (Wallr.) Liro, Ann. Acad. Sci. Fenn., Ser. A 17(no. 1): 95 (1924)

Ustilago avenae var. levis Kellerm. & Swingle, Ann. Rep. Kansas Agric. Exp. Stn 2: 214 (1890)
Ustilago levis (Kellerm. & Swingle) Magnus, Verh. bot. Ver. Prov. Brandenb. 37: 96 (1896) [1895]

Ustilago kolleri Wille, Bot. Notiser: 10 (1893)

Ustilago rostrupii Kitunen, Suom. Mannv.-taloud. Koel., Tiet. Julk. 15: 25, 104 (1922)

Position in classification:
Ustilago, Ustilaginaceae, Ustilaginales, Ustilaginomycetidae, Ustilaginomycetes, Basidiomycota, Fungi

Note:
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