| Ceramium diaphanum var. lophophorum Feldm. -Maz., 1941 |
| Ceramium diaphanum var. zostericola (Thur.) Feldm. -Maz., 1941 |
| Ceramium eatonianum (Farlow) De Toni, 1903 |
| Ceramium equisetoides E.Y. Dawson, 1944 |
| Ceramium evermannii Setch. & N.L. Gardner, 1930 |
| Ceramium fastigiatum Harv., 1834 |
| Ceramium fastigiatum Roussel, 1806 |
| Ceramium fastigiatum f. flaccidum Petersen, 1918 |
| Ceramium fimbriatum Setch. & N.L. Gardner, 1924 |
| Ceramium flaccidum (Kütz.) Ardiss., 1871 |
| Ceramium floridanum J. Agardh, 1894 |
| Ceramium gardneri Kylin, 1941 |
| Ceramium giacconei Cormaci & G. Furnari, 1991 |
| Ceramium gracillimum (Kütz.) Zanardini, 1847 |
| Ceramium gracillimum Griffiths & Harv., 1849 |
| Ceramium gracillimum var. byssoideum Feldm. -Maz., 1938 |
| Ceramium hamatispinum E.Y. Dawson, 1950 |
| Ceramium horridulum P.C. Silva, 1972 |
| Ceramium horridum Setch. & N.L. Gardner, 1924 |
| Ceramium howellii Setch. & N.L. Gardner, 1937 |