| Name | Hygrophila longifolia Nees |
| Authorship | Nees |
| Rank | Species |
| Placed in | Hygrophila |
| Citation | 1847 Fl. Bras. [Martius] 9: 21 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Hygrophila longifolia Nees |
| Identification made in | [no date] (1) |
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