| Name | Smilax williamsii Merrill |
| Authorship | Merrill |
| Rank | Species |
| Placed in | Smilax Linnaeus |
| Citation | 1910 Philipp. J. Sci., C. 5: 173. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Smilax williamsii Merrill |
| Identification made in | [no date] (1) |
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