| Name | Piper san-marcosanum var. gracillimum C. de Candolle |
| Authorship | C. de Candolle |
| Rank | Variety |
| Placed in | Piper san-marcosanum C. de Candolle |
| Citation | 1897 Anales Inst. Fis.-Geogr. Nac. Costa Rica 9: 158 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Piper san-marcosanum var. gracillimum C. de Candolle |
| Identification made in | 2015 (1) |