| Name | Pistia stratiotes var. obcordata (Schleiden) Engler |
| Authorship | (Schleiden) Engler |
| Rank | Variety |
| Placed in | Pistia stratiotes Linnaeus |
| Citation | 1878 Fl. Bras. Enum. Pl. 3(2): 214 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Pistia stratiotes var. obcordata (Schleiden) Engler |
| Identification made in | [no date] (6) |
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