a. Bot. [f. mod.L. Ustilagin-, USTILAGO + -OUS.]
1. Resembling, belonging or allied to, Ustilago.
1857. M. J. Berkeley, Introd. Crypt. Bot., 323. Besides the Ustilaginous species, there are others.
1900. B. D. Jackson, Gloss. Bot. Terms, 283.
2. Affected with ustilago; smutty (Cent. Dict.).