| Order | Family | Genus | Species |
|---|---|---|---|
| Bryopsidales | 10 | 40 | 979 |
| Chlorocystidales | 1 | 3 | 40 |
| Cladophorales | 8 | 39 | 641 |
| Dasycladales | 2 | 10 | 39 |
| Ignatiales | 1 | 3 | 6 |
| Oltmannsiellopsidales | 1 | 2 | 6 |
| Scotinosphaerales | 1 | 1 | 11 |
| Solotvyniales | 1 | 1 | 1 |
| Sykidiales | 1 | 1 | 3 |
| Trentepohliales | 1 | 5 | 517 |
| Ulotrichales | 9 | 25 | 134 |
| Ulvales | 8 | 30 | 933 |