| Name | Sematophyllum extensum Cardot |
| Authorship | Cardot |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Sematophyllum |
| Citation | 1905 Beih. Bot. Centralbl. 192(1): 134 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Sematophyllum extensum Cardot |
| Identification made in | [no date] (1) |