| Pterosiphoniella E.Y. Dawson, 1963 |
| Pterosiphoniella williamsii E.Y. Dawson, 1963 |
| Rhodomelaceae Aresch., 1847 |
| Ricardia Derbès & Solier, 1856 |
| Ricardia montagnei Derbès & Solier, 1856 |
| Ricardia montagnei f. gigantea Farlow |
| Savoiea M.J. Wynne, 2018 |
| Savoiea bipinnata (Postels & Ruprecht) M.J. Wynne, 2018 |
| Streblocladieae Díaz-Tapia & Maggs, 2017 |
| Symphyocladiella Bustamante, B.Y. Won & T.O. Cho, 2019 |
| Symphyocladiella baileyi (Harv.) D. Bustamante, B.Y. Won, S.C. Lindstr. & T.O. Cho, 2019 |
| Symphyocladiella dendroidea (Montagne) D. Bustamante, B.Y. Won, S.C. Lindstrom & T.O. Cho, 2019 |
| Tayloriella Kylin, 1938 |
| Tayloriella borealis (E.Y. Dawson) E.Y. Dawson, 1963 |
| Tayloriella dictyurus (J. Agardh) Kylin, 1956 |
| Tepoztequiella M.L. Núñez-Resendiz, Dreckmann & Sentíes, 2017 |
| Tepoztequiella rhizoidea Núñez-Resendiz, Dreckmann & Sentíes, 2017 |
| Veleroa E.Y. Dawson, 1944 |
| Veleroa subulata E.Y. Dawson, 1944 |
| Vertebrata S.F. Gray, 1821 |