| Name | Ceramium rubrum var. corymbosum Collins |
| Authorship | Collins |
| Rank | Variety |
| NomenclaturalStatus | NomNov |
| Placed in | Ceramium rubrum C. Agardh |
| Citation | 1900 Rhodora 2: 49 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Ceramium rubrum var. corymbosum Collins |
| Identification made in | [no date] (2) |
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