On Elymus virginicus L. [The host plant may be misidentified].
place_pub:Botanical Gazette 9:188. DEC 1884; Bulletin of the State Laboratory of Natural History 2 (3):170. AUG 1885.; synonymy:= Nigredo graminicola (Burrill) Arthur, Résultats Scientifiques du Congrès Botanique Vienne 1905, p. 343. 1906.