| Gentianaceae | |
Eustoma andrewsii
| A. Nelson | Proc. Biol. Soc. Washington 17(35): 177 | 1904 |
| Gentianaceae | |
Eustoma barkleyi
| Standl. ex Shinners | S. W. Naturalist 2(1): 39–40 | 1957 |
| Gentianaceae | |
Eustoma chironioides
| (Benth.) Griseb. | Prodr. 9: 51 | 1845 |
| Gentianaceae | ** |
Eustoma exaltatum
| (L.) Griseb. | Prodr. 9: 51 | 1845 |
| Gentianaceae | * |
Eustoma exaltatum
| (L.) Salisb. | Parad. Lond. pl. 34 | 1806 |
| Gentianaceae | ! |
Eustoma exaltatum
| (L.) Salisb. ex G. Don | Gen. Hist. 4(1): 211 | 1838 [1837] |
| Gentianaceae | ** |
Eustoma gracile
| Engelm. ex A. Gray | Bot. California 1: 621 | 1876 |
| Gentianaceae | |
Eustoma gracile
| Engelm. ex Small | Fl. S.E. U.S. 926 | 1903 |
| Gentianaceae | |
Eustoma grandiflorum
| (Raf.) Shinners | S. W. Naturalist 2(1): 41 | 1957 |
| Gentianaceae | |
Eustoma lacteum
| Liebm. | Index Seminum (Hamburg) | 1847 |
| Gentianaceae | |
Eustoma lacteum
| Liebm. ex Sond. | Allg. Gartenzeitung 16: 369 | 1848 |
| Gentianaceae | |
Eustoma maculata
| Benth. | Pl. Hartw. 292 | 1848 [1849] |
| Gentianaceae | ! |
Eustoma russellianum
| (Hook.) G. Don | Hort. Brit. (ed. 3) 473 | 1839 |
| Gentianaceae | ** |
Eustoma russellianum
| (Hook.) Griseb. ex DC. | Prodr. 9: 51 | 1845 |
| Gentianaceae | * |
Eustoma silenifolium
| Salisb. | Parad. Lond. , t. 34 | 1806 |