| Name | Gelidium crinale var. spinescens (F. T. Kuetzing) Schiffner |
| Authorship | (F. T. Kuetzing) Schiffner |
| Rank | Variety |
| Placed in | Gelidium crinale (Hare ex Turner) Gaillon |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Gelidium crinale var. spinescens (F. T. Kuetzing) Schiffner |
| Identification made in | [no date] (1) |