| Euphorbiaceae | ** |
Omphalea alternifolia
| (Willd.) Baill. | Étude Euphorb. 529 | 1858 |
| Euphorbiaceae | |
Omphalea ankaranensis
| L.J. Gillespie | Novon 7(2): 128–130, f. 1–4 | 1997 |
| Euphorbiaceae | |
Omphalea axillaris
| Sw. | Prodr. 95 | 1788 |
| Euphorbiaceae | ** |
Omphalea biglandulosa
| (Pers.) Baill. | Étude Euphorb. 529 | 1858 |
| Euphorbiaceae | |
Omphalea bracteata
| (Blanco) Merr. | Sp. Blancoan. 230 | 1918 |
| Euphorbiaceae | |
Omphalea brasiliensis
| Müll. Arg. | Linnaea 32: 86 | 1863 |
| Euphorbiaceae | |
Omphalea cardiophylla
| Hemsl. | Pharm. J. Trans. 1882: 301 | 1882 |
| Euphorbiaceae | |
Omphalea cauliflora
| Sw. | Prodr. 95 | 1788 |
| Euphorbiaceae | |
Omphalea celata
| P.I. Forst. | Austrobaileya 4(3): 381 | 1995 |
| Euphorbiaceae | |
Omphalea commutata
| Müll. Arg. | Linnaea 32: 86 | 1863 |
| Euphorbiaceae | * |
Omphalea cordata
| Sw. | Prodr. 95 | 1788 |
| Euphorbiaceae | * |
Omphalea diandra
| L. | Sp. Pl. (ed. 2) 2: 1377 | 1763 |
| Euphorbiaceae | ! |
Omphalea diandra
| L. | Syst. Nat. (ed. 10) 2: 1264 | 1759 |
| Euphorbiaceae | * |
Omphalea diandra
| Vell. | Fl. Flumin. 10: 12 | 1831 |
| Euphorbiaceae | |
Omphalea eglandulata
| Vell. | Fl. Flumin. 10: 12 | 1831 |
| Euphorbiaceae | |
Omphalea ekmanii
| Alain | Mem. New York Bot. Gard. 21: 128 | 1971 |
| Euphorbiaceae | |
Omphalea elaeophoroides
| Steyerm. | Publ. Field Mus. Nat. Hist., Bot. Ser. 22(3): 152 | 1940 |
| Euphorbiaceae | |
Omphalea epistylium
| Poir. | Encycl. Suppl. 4: 140 | 1816 |
| Euphorbiaceae | |
Omphalea frondosa
| Juss. ex Baill. | Étude Euphorb. 529 | 1858 |
| Euphorbiaceae | |
Omphalea gageana
| Airy Shaw | Kew Bull. 23: 131 | 1969 |
| Euphorbiaceae | |
Omphalea glandulata
| Vell. | Fl. Flumin. 10: 14 | 1831 |
| Euphorbiaceae | |
Omphalea grandifolia
| Merr. | Philipp. J. Sci. 16: 574 | 1920 |
| Euphorbiaceae | |
Omphalea guyanensis
| Klotzsch ex Lanj. | Euphorb. Surinam 163 | 1931 |
| Euphorbiaceae | |
Omphalea hypoleuca
| Griseb. | Nachr. Königl. Ges. Wiss. Georg-Augusts-Univ. 1: 177 | 1865 |
| Euphorbiaceae | |
Omphalea lactescens
| Vell. | Fl. Flumin. 10: 11 | 1831 |
| Euphorbiaceae | |
Omphalea laevigata
| Desf. | Tabl. École Bot. (ed. 3) 411 | |
| Euphorbiaceae | |
Omphalea linearibracteata
| (Millsp.) Pax | Pflanzenr. IV. 147 V(Heft 52): 20 | 1912 |
| Euphorbiaceae | |
Omphalea malayana
| Merr. | Philipp. J. Sci., C. 11: 71 | 1916 |
| Euphorbiaceae | |
Omphalea mansfeldiana
| Mildbr. | Notizbl. Bot. Gart. Berlin-Dahlem 13: 276–277 | 1936 |
| Euphorbiaceae | |
Omphalea maylayana
| Merr. | Philipp. J. Sci. 11: 71 | 1916 |
| Euphorbiaceae | |
Omphalea megacarpa
| Hemsl. | Icon. Pl. 4: t. 2537 | 1897 |
| Euphorbiaceae | * |
Omphalea nucifera
| Sw. | Prodr. 95 | 1788 |
| Euphorbiaceae | |
Omphalea occidentalis
| Leandri | Bull. Soc. Bot. France 85: 529, f. 1(26–30) | 1938 |
| Euphorbiaceae | |
Omphalea oleifera
| Hemsl. | Pharm. J. Trans. 13: 301 | 1882 |
| Euphorbiaceae | |
Omphalea oppositifolia
| (Willd.) L.J. Gillespie | Novon 7(2): 133 | 1997 |
| Euphorbiaceae | |
Omphalea palmata
| Leandri | Bull. Soc. Bot. France 85: 530 | 1938 |
| Euphorbiaceae | |
Omphalea panamensis
| (Beurl.) I.M. Johnst. | Sargentia 8: 177–178 | 1949 |
| Euphorbiaceae | |
Omphalea papuana
| Pax & K. Hoffm. | Pflanzenr. IV. 147 VII(Heft 63): 419 | 1914 |
| Euphorbiaceae | |
Omphalea papuana
| Gage | Nova Guinea 12: 485 | 1917 |
| Euphorbiaceae | |
Omphalea philippinensis
| Merr. | Philipp. J. Sci. 3: 236 | 1908 |
| Euphorbiaceae | |
Omphalea queenslandiae
| F.M. Bailey | Rep. Exped. Bellenden-Ker 58 | 1889 |
| Euphorbiaceae | |
Omphalea sargentii
| Merr. | Philipp. J. Sci. 16: 574 | 1920 |
| Euphorbiaceae | ! |
Omphalea triandra
| L. | Syst. Nat. (ed. 10) 2: 1264, 1378 | 1759 |
| Euphorbiaceae | * |
Omphalea triandra
| Tussac | Fl. Antill. 4: 18-20, t. 9 | 1827 |
| Euphorbiaceae | |
Omphalea trichotoma
| Müll. Arg. | Linnaea 32: 86 | 1863 |
| Euphorbiaceae | |
Omphalea tricocca
| | | |
| Euphorbiaceae | |
Omphalea trinitatis
| Pax & K. Hoffm. | Pflanzenr. IV. 147 V(Heft 52): 16 | 1912 |
| Euphorbiaceae | |
Omphalea verticillata
| Vell. | Fl. Flumin. 10: 15 | 1831 |