| Name | Ophioglossum lusitanicum subsp. californicum (Prantl) R. T. Clausen |
| Authorship | (Prantl) R. T. Clausen |
| Rank | Subspecies |
| Placed in | Ophioglossum lusitanicum Linnaeus |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Ophioglossum lusitanicum subsp. californicum (Prantl) R. T. Clausen |
| Identification made in | [no date] (1) |