| Name | Trigonostemon merrillii Elmer |
| Authorship | Elmer |
| Rank | Species |
| Placed in | Trigonostemon Blume |
| Citation | 1911 Leafl. Philipp. Bot. 4: 1304 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Trigonostemon merrillii Elmer |
| Identification made in | [no date] (2) |
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