| Name | Gelidium corneum var. confertum Greville |
| Authorship | Greville |
| Rank | Variety |
| Placed in | Gelidium corneum (Hudson) J. V. Lamouroux |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Gelidium corneum var. confertum Greville |
| Identification made in | [no date] (1) |