Basionym Name:Uredo longissima var. megalospora Riess, Herb. Viv. Mycol., Cent.: no. 1897 (1854)
Homotypic synonyms:Ustilago longissima var. megalospora (Riess) E.K. Cash, in Trotter & Cash, Syll. fung. (Abellini) 26: 528 (1972)Ustilago megalospora (Riess) Cif., Nuovo G. bot. ital., n.s. 40(2): 261 (1933)