| Name | Nemacladus sigmoideus G. T. Robbins |
| Authorship | G. T. Robbins |
| Rank | Species |
| Placed in | Nemacladus |
| Citation | 1958 Aliso 4(1): 144–145 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Nemacladus sigmoideus G. T. Robbins |
| Identification made in | [no date] (12) |