Number of species with valid names reported as Polysiphonia eastwoodiae: 1
| N° | Name of the species |
|---|---|
| Melanothamnus tongatensis (Harvey ex Kützing) Díaz-Tapia & Maggs |
| N° | Name of the species |
|---|---|
| Melanothamnus tongatensis (Harvey ex Kützing) Díaz-Tapia & Maggs |