| Name | Syngonanthus acephalus Hensold |
| Authorship | Hensold |
| Rank | Species |
| Placed in | Syngonanthus |
| Citation | 1991 Ann. Missouri Bot. Gard. 78: 434 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Syngonanthus acephalus Hensold |
| Identification made in | 2001 (1) |