| Name | Spermosira major Kützing |
| Authorship | Kützing |
| Rank | Species |
| NomenclaturalStatus | NomInvalid |
| Placed in | Spermosira Kützing ex A. B. Frank |
| Remarks | pre-starting date of the group. |
| Citation | 1847 Bot. Zeitung (Berlin) 5: 197 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Spermosira major Kützing |
| Identification made in | [no date] (1) |
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