| Name | Gelidium crassifolium Ruprecht |
| Authorship | Ruprecht |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Gelidium J. V. Lamouroux |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Gelidium crassifolium Ruprecht |
| Identification made in | [no date] (1) |