| Name | Lysimachia ×producta (A. Gray) Fernald |
| Authorship | (A. Gray) Fernald |
| Rank | Species |
| Placed in | Lysimachia |
| Citation | 1899 Rhodora 1(7): 134 |
| Holdings | 39 Specimens held in the Harvard University Herbaria identified as Lysimachia ×producta (A. Gray) Fernald |
| Identification made in | [no date] (13), 1951 (5), 1970 (16), 2023 (5) |
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