| Name | Tabellaria fenstrata f. ventricosa (Kützing) Grunow |
| Authorship | (Kützing) Grunow |
| Rank | Forma |
| Placed in | Tabellaria fenstrata \N |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Tabellaria fenstrata f. ventricosa (Kützing) Grunow |
| Identification made in | [no date] (1) |