| Polysiphonia simplex Hollenberg, 1942 |
| Polysiphonia snyderae Kylin, 1941 |
| Polysiphonia sonorensis Hollenberg, 1942 |
| Polysiphonia sphaerocarpa Børgesen, 1918 |
| Polysiphonia subtilissima Mont., 1840 |
| Polysiphonia tepida Hollenberg, 1958 |
| Polysiphonia tongatensis Harv. & Kütz., 1864 |
| Polysiphonia villum J. Agardh, 1863 |
| Polysiphonieae Schmitz, 1889 |
| Pterochondria Hollenberg, 1942 |
| Pterochondria woodii (Harv.) Hollenberg, 1942 |
| Pterochondria woodii var. pygmaea (Setch.) Dawson, 1963 |
| Pterosiphonia Falkenb., 1897 |
| Pterosiphonia baileyi (Harv.) Falkenb., 1901 |
| Pterosiphonia bipinnata (E. Post & Rupr.) Falkenb., 1901 |
| Pterosiphonia californica Kylin, 1941 |
| Pterosiphonia dendroidea (Mont.) Falkenb., 1901 |
| Pterosiphonia farlowii G.J.Hollenberg, 1976 |
| Pterosiphonia pennata (C. Agardh) Sauv., 1897 |
| Pterosiphonieae Falkenb., 1901 |