| Gigartina papillata (C. Agardh) J. Agardh, 1846 |
| Gigartina pectinata E.Y. Dawson, 1944 |
| Gigartina serrata N.L. Gardner, 1927 |
| Gigartina spinosa (Kütz.) Harv., 1853 |
| Gigartina teedei (Mertens ex Roth) J.V. Lamour., 1813 |
| Gigartina tepida Hollenberg, 1945 |
| Gigartina volans (C. Agardh) J. Agardh, 1846 |
| Gigartinaceae Kütz., 1843 |
| Iridaea Bory, 1826 |
| Iridaea cordata (Turner) Bory, 1826 |
| Iridaea cordata var. splendens (Setch. & N.L. Gardner) I.A. Abbott, 1972 |
| Iridaea flaccida (Setch. & N.L. Gardner) P.C. Silva, 1957 |
| Iridaea heterocarpa Postels & Rupr., 1840 |
| Iridaea lineare (Setch. & N.L. Gardner) Kylin, 1941 |
| Iridophycus Setch. & N.L. Gardner, 1936 |
| Iridophycus lineare Setch. & N.L. Gardner, 1937 |
| Mazzaella De Toni, 1936 |
| Mazzaella affinis (Harv.) Fredericq, 1993 |
| Mazzaella californica (J. Agardh) De Toni, 1936 |
| Mazzaella cobinae (E.Y. Dawson) Fredericq, 1993 |