| Name | Isoetes ×brittonii D. F. Brunton & W. C. Taylor |
| Authorship | D. F. Brunton & W. C. Taylor |
| Rank | Species |
| Placed in | Isoetes Linnaeus |
| Citation | 1990 Amer. Fern J. 80: 85 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Isoetes ×brittonii D. F. Brunton & W. C. Taylor |
| Identification made in | [no date] (5), 1993 (5), 1994 (2) |