| Name | Gigartina mamillosa f. subsimplex (Setchell) Setchell |
| Authorship | (Setchell) Setchell |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Gigartina mamillosa (Goodenough & Woodward) J. Agardh |
| Remarks | Created from Taxon Name Import: Gigartina mamillosa f. subsimplex (Setchell) Setchell |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Gigartina mamillosa f. subsimplex (Setchell) Setchell |
| Identification made in | [no date] (1) |