| Name | Spongomorpha arcta (Dillwyn) Kützing |
| Authorship | (Dillwyn) Kützing |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Spongomorpha Kützing |
| Contains | Spongomorpha arcta var. limitanea Collins |
| GUID | urn:lsid:marinespecies.org:taxname:147470 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Spongomorpha arcta (Dillwyn) Kützing |
| Identification made in | [no date] (10) |