| Name | Rhizoclonium riparium f. validum Foslie |
| Authorship | Foslie |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Rhizoclonium riparium (Roth) Harvey |
| Remarks | Created from Taxon Name Import: Rhizoclonium riparium f. validum Foslie |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Rhizoclonium riparium f. validum Foslie |
| Identification made in | [no date] (1) |
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