| Name | Phymatolithon polymorphum f. coerulescens Heydrich nom.prov. |
| Authorship | Heydrich nom.prov. |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Phymatolithon polymorphum Foslie |
| Remarks | Created from Taxon Name Import: Phymatolithon polymorphum f. coerulescens Heydrich nom.prov. |