| Name | Cinclidotus aquaticus f. tenuis Baumgartner | 
| Authorship | Baumgartner | 
| Rank | Forma | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Cinclidotus aquaticus (Jacquin) Bruch, Schimper & W. Gümbel | 
| Citation | 1924 Ann. Naturhist. Mus. Wien 37: 210 | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cinclidotus aquaticus f. tenuis Baumgartner | 
| Identification made in | [no date] (1) | 
