| Name | Sematophyllum tenuicarpum R. S. Williams |
| Authorship | R. S. Williams |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Sematophyllum |
| Citation | 1909 Bull. New York Bot. Gard. 6(21): 253 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sematophyllum tenuicarpum R. S. Williams |
| Identification made in | [no date] (2) |