| Name | Najas guadalupensis subsp. olivacea (Rosendahl & Butters) R. R. Haynes & Hellquist |
| Authorship | (Rosendahl & Butters) R. R. Haynes & Hellquist |
| Rank | Subspecies |
| Placed in | Najas guadalupensis (Sprengel) Magnus |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Najas guadalupensis subsp. olivacea (Rosendahl & Butters) R. R. Haynes & Hellquist |
| Identification made in | [no date] (12) |