| Name | Ustilago longissima f. glyceriae-aquaticae Saccardo |
| Authorship | Saccardo |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Ustilago longissima (Sowerby) Meyen |
| Citation | 1876 Cent. 4: no. 374 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Ustilago longissima f. glyceriae-aquaticae Saccardo |
| Identification made in | [no date] (1) |
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