| Name | Symphyosiphon minor Hilse |
| Authorship | Hilse |
| Rank | Species |
| NomenclaturalStatus | NomInvalid |
| Placed in | Symphyosiphon Kützing ex A. B. Frank |
| Remarks | Bornet & Flahault (Ann. Sci. Nat.., ser. 7, 5: 128. 1887) treated “Symphyosiphon minor” as a synonym of Hydrocoryne spongiosa. |
| Citation | 1865 Algen Sachsens no. 1776 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Symphyosiphon minor Hilse |
| Identification made in | [no date] (1) |