| Name | Spongiosperma riparium (Monachino) Zarucchi |
| Authorship | (Monachino) Zarucchi |
| Rank | Species |
| Placed in | Spongiosperma Zarucchi |
| Citation | 1987 Agric. Univ. Wageningen Pap. 87(1): 65 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Spongiosperma riparium (Monachino) Zarucchi |
| Identification made in | 1981 (1) |