| Name | Clematis siamensis J. R. Drummond & W. G. Craib |
| Authorship | J. R. Drummond & W. G. Craib |
| Rank | Species |
| Placed in | Clematis Linnaeus |
| Citation | 1915 Bull. Misc. Inform. Kew 1915: 420 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Clematis siamensis J. R. Drummond & W. G. Craib |
| Identification made in | [no date] (1), 2024 (2) |
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