| Rubiaceae | |
Isertia alba
| Sprague | Trans. Bot. Soc. Edinburgh 22: 434 | 1905 |
| Rubiaceae | * |
Isertia alba
| (K. Schum. & K. Krause) Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 8(5): 346 | 1931 |
| Rubiaceae | ** |
Isertia breviflora
| Mart. ex Steud. | Nomencl. Bot. (ed. 2) 1: 825 | 1840 |
| Rubiaceae | |
Isertia bullata
| K. Schum. | Fl. Bras. 6(6): 286 | 1889 |
| Rubiaceae | ! |
Isertia coccinea
| (Aubl.) Vahl | Eclog. Amer. 2: 27 | 1798 |
| Rubiaceae | * |
Isertia coccinea
| Bartl. ex DC. | Prodr. 4: 437 | 1830 |
| Rubiaceae | * |
Isertia coccinea
| (Aubl.) J.F. Gmel. | Syst. Nat. 2: 567 | 1791 |
| Rubiaceae | ** |
Isertia commutata
| Sagot | No. 388 | |
| Rubiaceae | ! |
Isertia commutata
| Miq. | Stirp. Surinam. Select. 172 | 1846 |
| Rubiaceae | |
Isertia deamii
| Bartlett | Proc. Amer. Acad. Arts 43(2): 59 | 1907 |
| Rubiaceae | |
Isertia flava
| Miq. | Linnaea 18: 613 | 1844 [1845] |
| Rubiaceae | |
Isertia glabra
| Ducke | Arch. Jard. Bot. Rio de Janeiro 4: 179 | 1925 |
| Rubiaceae | |
Isertia haenkeana
| DC. | Prodr. 4: 437–438 | 1830 |
| Rubiaceae | |
Isertia hoehnei
| Krause | Arch. Bot. São Paulo 1: 115 | 1925 |
| Rubiaceae | |
Isertia humboldtiana
| K. Schum. & Krause | Bot. Jahrb. Syst. 40: 321 | 1908 |
| Rubiaceae | |
Isertia hypoleuca
| Benth. | Hooker's J. Bot. Kew Gard. Misc. 3: 220 | 1841 |
| Rubiaceae | |
Isertia juruana
| (K. Schum. & Krause) Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 8(5): 346 | 1931 |
| Rubiaceae | |
Isertia krausei
| Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 11(5): 216–217 | 1936 |
| Rubiaceae | |
Isertia laevis
| (Triana) B.M. Boom | Brittonia 36(4): 433 | 1984 |
| Rubiaceae | |
Isertia latifolia
| Standl. | | |
| Rubiaceae | |
Isertia leiantha
| Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 8(3): 163 | 1930 |
| Rubiaceae | |
Isertia longifolia
| (Hoffmanns. ex Roem. & Schult.) K. Schum. | Fl. Bras. 6(6) 288 | 1889 |
| Rubiaceae | |
Isertia panamensis
| (Standl.) Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 8(5): 346 | 1931 |
| Rubiaceae | |
Isertia parviflora
| Vahl | Eclog. Amer. 2: 28, pl. 15 | 1798 |
| Rubiaceae | |
Isertia parvifolia
| Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 4(8): 278 | 1929 |
| Rubiaceae | |
Isertia pittieri
| (Standl.) Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 8(5): 346 | 1931 |
| Rubiaceae | |
Isertia pterantha
| Bremek. | Brittonia 8: 2442 | 1957 |
| Rubiaceae | |
Isertia purdiei
| Sprague | Trans. Proc. Bot. Soc. Edinb. 22: 434 | |
| Rubiaceae | |
Isertia reticulata
| Britton ex Rusby | Mem. Torrey Bot. Club 6(1): 46 | 1896 |
| Rubiaceae | |
Isertia rosea
| Spruce ex K. Schum. | Fl. Bras. 6(6): 284 | 1889 |
| Rubiaceae | |
Isertia scarlatina
| (K. Schum. & Krause) Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 8(5): 346 | 1931 |
| Rubiaceae | |
Isertia scorpioides
| B.M. Boom | Brittonia 36(4): 435–437, f. 5 | 1984 |
| Rubiaceae | |
Isertia spiciformis
| DC. | Prodr. 4: 437 | 1830 |
| Rubiaceae | |
Isertia spraguei
| Wernham | Bull. Misc. Inform. Kew 1914: 65 | 1914 |
| Rubiaceae | |
Isertia verrucosa
| (Bonpl.) Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 8(5): 346 | 1931 |
| Rubiaceae | |
Isertia viscosa
| Ducke | Arch. Jard. Bot. Rio de Janeiro 3: 260 | 1922 |
| Rubiaceae | |
Isertia weberbaueri
| Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 4(8): 277 | 1929 |
| Rubiaceae | |
Isertia wilhelminensis
| Steyerm. | Mem. New York Bot. Gard. 17: 296 | 1967 |