| Cryptocentrum gracillimum Ames & C.Schweinf. | A. M. Brenes 1182 | Costa Rica. Alajuela. San Ramon (Canton). San Pedro de San Ramon. | | 04038773 |  |
| Cryptocentrum gracillimum Ames & C.Schweinf. | A. M. Brenes 1192 | Costa Rica. Alajuela. San Ramon (Canton). Colinas de San Ramon. | | 04038771 |  |
| Cryptocentrum gracillimum Ames & C.Schweinf. | J. J. Pipoly 10633 | Guyana. Cuyuni-Mazaruni. Foothills immediately S of Mt. Ayanganna; ± 1 km W of Pong Creek. | | 04038760 |  |
| Cryptocentrum gracillimum Ames & C.Schweinf. | J. A. Steyermark 497 | Venezuela. Bolívar. vicinity of km. 134, bordering headwaters of Río Cuyuní, northeast of Luepa. | | 04038772 |  |