| Gentianaceae | |
Tapeinostemon adulans
| J.R. Grant | J. Bot. Res. Inst. Texas 6: 101, f. 1, 4E–F | 2012 |
| Gentianaceae | |
Tapeinostemon borrerioides
| Benth. ex Knobl. | Bot. Centralbl. 60: 355, in obs. | 1894 |
| Gentianaceae | |
Tapeinostemon breweri
| Steyerm. & Maguire | Acta Bot. Venez. 14(3): 24 | 1984 |
| Gentianaceae | |
Tapeinostemon capitatum
| Benth. | Hooker's J. Bot. Kew Gard. Misc. 6: 195 | 1854 |
| Gentianaceae | |
Tapeinostemon jauaensis
| Steyerm. & Maguire | Bol. Soc. Venez. Ci. Nat. 32(132–133): 394 | 1976 |
| Gentianaceae | |
Tapeinostemon longiflorum
| Maguire & Steyerm. | Mem. New York Bot. Gard. 32: 359–360 | 1981 |
| Gentianaceae | |
Tapeinostemon ptariense
| Steyerm. | Lloydia 14: 61 | 1951 |
| Gentianaceae | |
Tapeinostemon rugosum
| Maguire & Steyerm. | Mem. New York Bot. Gard. 32: 366 | 1981 |
| Gentianaceae | |
Tapeinostemon sessiliflorum
| (Humb. & Kunth ex Roem. & Schult.) Pruski & S.F. Sm. | Brittonia 49(3): 347 | 1997 |
| Gentianaceae | |
Tapeinostemon spenneroides
| Benth. | Hooker's J. Bot. Kew Gard. Misc. 6: 194 | 1854 |
| Gentianaceae | |
Tapeinostemon surinamense
| (Jonker) Steyerm. ex Lemée | Fl. Guyane Franç. 3: 283 | 1954 |
| Gentianaceae | |
Tapeinostemon zamoranum
| Steyerm. | Lloydia 14(1): 63–64, f. 8–11 | 1951 |