a. Bot. [f. mod.L. Ustilagine-æ (see def.) + -OUS.] Of or pertaining to the Ustilagineæ (brand fungi).

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1889.  Plowright, Brit. Uredineæ, x. 60. One peculiarity of most of the Ustilagineous mycelia.

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1900.  B. D. Jackson, Gloss. Bot. Terms, 283. Usterophyte,… Berkeley’s name for one of the Ustilagineous Fungi.

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