| Name | Sphaerozosma vertebratum f. quadratum Nygaard |
| Authorship | Nygaard & 1950 |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Sphaerozosma vertebratum Brébisson ex Ralfs |
| Remarks | Created from Taxon Name Import: Sphaerozosma vertebratum f. quadratum Nygaard, 1950 |
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