| Name | Isoetes piedmontana (N. Pfeiffer) C. F. Reed |
| Authorship | (N. Pfeiffer) C. F. Reed |
| Rank | Species |
| Placed in | Isoetes Linnaeus |
| Citation | 1965 Phytologia 12: 392 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Isoetes piedmontana (N. Pfeiffer) C. F. Reed |
| Identification made in | 1985 (1), 2003 (6) |