| Ozophora clevelandii (Farlow) I.A. Abbott, 1969 |
| Ozophora latifolia I.A. Abbott, 1969 |
| Petrocelis J. Agardh, 1851 |
| Petrocelis anastomosans E.Y. Dawson, 1961 |
| Petrocelis ascendens E.Y. Dawson, 1961 |
| Petrocelis franciscana Setch. & N.L. Gardner, 1917 |
| Petroglossum Hollenberg, 1943 |
| Petroglossum pacificum Hollenberg, 1943 |
| Petroglossum parvum Hollenberg, 1945 |
| Phyllophora Grev., 1830 |
| Phyllophora californica (J. Agardh) Kylin, 1931 |
| Phyllophora clevelandii Farlow, 1875 |
| Phyllophora submaritimus E.Y. Dawson, 1961 |
| Phyllophoraceae Nägeli, 1847 |
| Stenogramma Harv., 1840 |
| Stenogramma interruptum (C. Agardh) Mont. ex Harv., 1846 |