| Name | Pomatocalpa diffusum Breda |
| Authorship | Breda |
| Rank | Species |
| Placed in | Pomatocalpa |
| Citation | 1830 Gen. Sp. Orchid. Asclep. 4: t. 16 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Pomatocalpa diffusum Breda |
| Identification made in | [no date] (2), 2005 (3) |