| Name | Ruellia williamsii Leonard |
| Authorship | Leonard |
| Rank | Species |
| Placed in | Ruellia Linnaeus |
| Citation | 1950 Ceiba 1(2): 105 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Ruellia williamsii Leonard |
| Identification made in | [no date] (1), 2015 (1) |
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