| Name | Cylindrospermum polyspermum Kützing |
| Authorship | Kützing |
| Rank | Species |
| NomenclaturalStatus | NomInvalid |
| Placed in | Cylindrospermum Kützing ex Bornet & Flahault |
| Remarks | Publication: pre-starting date for valid publication of this group |
| Citation | 1843 Phycol. General. 212 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Cylindrospermum polyspermum Kützing |
| Identification made in | [no date] (2) |
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