Hydrodendron alternatum- Hydrodendron arboreum
- Hydrodendron armatum
- Hydrodendron australe
- Hydrodendron cacinformis
- Hydrodendron dichotomum
- Hydrodendron expansum
- Hydrodendron gardineri
- Hydrodendron gorgonoide
- Hydrodendron gracilis
- Hydrodendron laxum
- Hydrodendron mirabile
- Hydrodendron pacificum
- Hydrodendron sibogae
- Hydrodendron tottoni