| Name | Spongomorpha mertensii (Yendo) Setchell & N. L. Gardner | 
| Authorship | (Yendo) Setchell & N. L. Gardner | 
| Rank | Species | 
| NomenclaturalStatus | Unknown | 
| Placed in | Spongomorpha Kützing | 
| Contains | Spongomorpha mertensii var. tenuis (Tokida) Tokida | 
| Remarks | Created from Taxon Name Import: Spongomorpha mertensii (Yendo) Setchell & N. L. Gardner | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Spongomorpha mertensii (Yendo) Setchell & N. L. Gardner | 
| Identification made in | [no date] (1) |