Subclase: Rhodymeniophycidae
Number of orders reported for the subclass Rhodymeniophycidae: 12
| N° | Name of the order |
|---|---|
| Ceramiales | |
| Gigartinales | |
| Bonnemaisoniales | |
| Rhodymeniales | |
| Halymeniales | |
| Gelidiales | |
| Gracilariales | |
| Peyssonneliales | |
| Plocamiales | |
| Nemastomatales | |
| Acrosymphytales | |
| Sebdeniales |