| Name | Helminthocladia australis Harvey |
| Authorship | Harvey |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Helminthocladia J. Agardh |
| Contains | Helminthocladia australis var. californica J. Agardh Helminthocladia australis f. ramosissima Levring |
| Remarks | Created from Taxon Name Import: Helminthocladia australis Harvey |
| GUID | urn:lsid:marinespecies.org:taxname:213783 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Helminthocladia australis Harvey |
| Identification made in | [no date] (2) |