| Name | Guettardella sandwicensis (A. Gray) H. Mann |
| Authorship | (A. Gray) H. Mann |
| Rank | Species |
| Placed in | Guettardella |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Guettardella sandwicensis (A. Gray) H. Mann |
| Identification made in | [no date] (1) |