| Plagiotropis pusilla (W. Greg.) Kuntze, 1898 |
| Plagiotropis seriata (Cleve) Kuntze, 1898 |
| Plagiotropis vitrea (W. Sm.) Grunow, 1880 |
| Plagiotropis vitrea var. genuina Cleve-Euler, 1952 |
| Plagiotropis vitrea var. scaligera (Grunow) Peragallo, 1903 |
| Pleurosigma W. Sm., 1852 |
| Pleurosigma acutum Norman ex Ralfs, 1861 |
| Pleurosigma aestuarii (Bréb. ex Kütz.) W. Sm., 1853 |
| Pleurosigma angulatum W. Sm., 1852 |
| Pleurosigma angulatum var. genuinum Cleve-Euler, 1952 |
| Pleurosigma australe Grunow, 1867 |
| Pleurosigma australicum O.N. Witt, 1873 |
| Pleurosigma cuspidatum (Cleve) Cleve, 1894 |
| Pleurosigma decorum W. Sm., 1853 |
| Pleurosigma directum Grunow, 1880 |
| Pleurosigma distinguendum Hust., 1955 |
| Pleurosigma diverse-striatum Meister, 1935 |
| Pleurosigma elongatum W. Sm., 1852 |
| Pleurosigma elongatum var. elongatum W. Sm., 1852 |
| Pleurosigma elongatum var. gracile Grunow, 1878 |