| Name | Viola diffusa subsp. apoensis (Elmer) D. M. Moore |
| Authorship | (Elmer) D. M. Moore |
| Rank | Subspecies |
| Placed in | Viola diffusa Gingins |
| Citation | 1971 Fl. Males., Ser. 1, Spermat. 7(1): 202 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Viola diffusa subsp. apoensis (Elmer) D. M. Moore |
| Identification made in | [no date] (10) |