| Osmundea multibulba (E.Y. Dawson, Neushul & Wildman) K.W. Nam, 1994 |
| Osmundea purepecha Sentíes, Mendoza- González & Mateo-Cid, 2014 |
| Osmundea sinicola (Setch. & N.L. Gardner) K.W. Nam, 1994 |
| Osmundea spectabilis (Postels & Rupr.) K.W. Nam, 1994 |
| Osmundea spectabilis var. diegoensis (E.Y. Dawson) K.W. Nam |
| Osmundea splendens (Hollenberg) K.W. Nam, 1993 |
| Palisada K.W. Nam, 2007 |
| Palisada corallopsis (Mont.) Sentíes, Fujii & Díaz-Larrea, 2008 |
| Palisada flagellifera (J. Agardh) K.W. Nam, 2007 |
| Palisada gemmifera (Harvey) K.W. Nam, 2007 |
| Palisada iridescens (M.J. Wynne & D.L. Ballant.) K.W. Nam, 2007 |
| Palisada paniculata (Kütz.) J.N. Norris, 2014 |
| Palisada papillosa (C. Agardh) K.W. Nam, 2007 |
| Palisada pedrochei J.N. Norris, 2014 |
| Palisada perforata (Bory) K.W. Nam, 2007 |
| Palisada poiteaui (J.V. Lamour.) K.W. Nam, 2007 |
| Palisada poiteaui var. gemmifera (Harvey) Sentíes, Fujii & Díaz-Larrea, 2008 |
| Palisada thuyoides (Kütz.) Cassano, Díaz-Larrea, Sentíes, Gil-Rodríguez & M.T. Fujii, 2009 |
| Polysiphonia Grev., 1823 |
| Polysiphonia acuminata N.L. Gardner, 1927 |