| Euphorbiaceae | ** |
Aalius
| Rumph. ex Lam. | Encycl. 1: 1 | 1793 |
| Euphorbiaceae | ** |
Aapaca
| Metzdorff | Bot. Jahresber. (Just) 1885(2): 212 | 1888 |
| Euphorbiaceae | |
Acalypha
| L. | Sp. Pl. 2: 1003 | 1753 |
| Euphorbiaceae | ** |
Acalyphes
| Hassk. | Cat. Hort. Bot. Bogor. 235 | 1844 |
| Euphorbiaceae | |
Acalyphopsis
| Pax & K. Hoffm. | Pflanzenr. IV. 147 XVI(Heft 85): 178 | 1924 |
| Euphorbiaceae | |
Acanthocaulon
| Klotzsch ex Endl. | Gen. Pl. 4(3): 88 | 1850 |
| Euphorbiaceae | |
Acantholoma
| Gaudich. ex Baill. | Adansonia 6: 231 | 1866 |
| Euphorbiaceae | |
Acanthopyxis
| Miq. ex Lanj. | Euphorb. Surinam 128 | 1931 |
| Euphorbiaceae | |
Accia
| A. St.-Hil. | Leçons Bot. 499 | 1840 |
| Euphorbiaceae | !! |
Acidocroton
| Griseb. | Fl. Brit. W. I. 42 | 1864 [1859] |
| Euphorbiaceae | * |
Acidoton
| P. Browne | Civ. Nat. Hist. Jamaica 355 | 1756 |
| Euphorbiaceae | ! |
Acidoton
| Sw. | Prodr. 6, 83 | 1788 |
| Euphorbiaceae | |
Aconceveibum
| Miq. | Fl. Ned. Ind. 1(2): 389 | 1859 |
| Euphorbiaceae | |
Actephilopsis
| Ridl. | Bull. Misc. Inform. Kew 1923: 360 | 1923 |
| Euphorbiaceae | ** |
Actinostema
| Lindl. | Veg. Kingd. 281 | 1846 |
| Euphorbiaceae | |
Actinostemon
| Mart. ex Klotzsch | Arch. Naturgesch. 7(1): 184 | 1841 |
| Euphorbiaceae | !! |
Adelia
| L. | Syst. Nat. (ed. 10) 2: 1285, 1298 | 1759 |
| Euphorbiaceae | |
Adenoceras
| Rchb. & Zoll. ex Baill. | Étude Euphorb. 430 | 1858 |
| Euphorbiaceae | |
Adenochlaena
| Boivin ex Baill. | Étude Euphorb. 472 | 1858 |
| Euphorbiaceae | |
Adenocline
| Turcz. | Bull. Soc. Imp. Naturalistes Moscou 16: 59 | 1843 |
| Euphorbiaceae | |
Adenogyne
| Klotzsch | Arch. Naturgesch. 7: 183 | 1841 |
| Euphorbiaceae | |
Adenogynum
| Rchb. f. & Zoll. | Acta Soc. Regiae Sci. Indo-Neerl. 1: 23 | 1856 |
| Euphorbiaceae | |
Adenopeltis
| Bertero ex A. Juss. | Ann. Sci. Nat. (Paris) 25: 24 | 1832 |
| Euphorbiaceae | * |
Adenopetalum
| Klotzsch & Garcke | Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1859: 250 | 1859 [1860] |
| Euphorbiaceae | |
Adenophaedra
| (Müll. Arg.) Müll. Arg. | Fl. Bras. 11(2): 385 | 1874 |
| Euphorbiaceae | |
Adenorhopium
| Rchb. | Consp. Regn. Veg. 195 | 1828 |
| Euphorbiaceae | |
Adenorima
| Raf. | Fl. Tellur. 4: 112 | 1836 [1838] |
| Euphorbiaceae | |
Adenoropium
| Pohl | Pl. Bras. Icon. Descr. 1: 12 | 1826 [1827] |
| Euphorbiaceae | ** |
Adisa
| Steud. | Nomencl. Bot. (ed. 2) 1: 28 | 1840 |
| Euphorbiaceae | |
Adisca
| Blume | Bijdr. Fl. Ned. Ind. (12): 609 | 1825 [1826] |
| Euphorbiaceae | |
Adriana
| Gaudich. | Ann. Sci. Nat. (Paris) 5: 223 | 1825 |
| Euphorbiaceae | |
Adriania
| Baill. | Étude Euphorb. 405 | |
| Euphorbiaceae | |
Aegopicron
| Giseke | Prael. Ord. Nat. 474 | 1792 |
| Euphorbiaceae | |
Aegopricon
| L. f. | Suppl. 413 | 1782 |
| Euphorbiaceae | |
Aegopricum
| L. | Pl. Surin. 15 | 1775 |
| Euphorbiaceae | |
Afrotrewia
| Pax & K. Hoffm. | Pflanzenr. IV. 147 VII(Heft 63): 14 | 1914 |
| Euphorbiaceae | |
Agaloma
| Raf. | Fl. Tellur. 4: 116–117 | 1836 [1838] |
| Euphorbiaceae | |
Agirta
| Baill. | Étude Euphorb. 463 | 1858 |
| Euphorbiaceae | |
Agrostistachys
| Dalzell | Hooker's J. Bot. Kew Gard. Misc. 2: 41 | 1850 |
| Euphorbiaceae | |
Agynaia
| Hassk. | Flora 25 Beibl. 2: 40 | 1842 |
| Euphorbiaceae | * |
Agyneia
| L. | Mant. Pl. 2: 161, 296 [576] | 1771 |
| Euphorbiaceae | |
Aklema
| Raf. | Fl. Tellur. 4: 114 | 1836 [1838] |
| Euphorbiaceae | |
Alchornea
| Sw. | Prodr. 6, 98 | 1788 |
| Euphorbiaceae | |
Alchorneopsis
| Müll. Arg. | Linnaea 34: 156 | 1865 |
| Euphorbiaceae | |
Alcinaeanthus
| Merr. | Philipp. J. Sci. 7: 379 | 1912 |
| Euphorbiaceae | |
Alcoceria
| Fernald | Proc. Amer. Acad. Arts 36: 493 | 1901 |
| Euphorbiaceae | ! |
Aldinia
| Raf. | Autik. Bot. 50 | 1840 |
| Euphorbiaceae | |
Alectoroctonum
| Schltdl. | Linnaea 19(2): 252 | 1847 [1846] |
| Euphorbiaceae | |
Aleurites
| J.R. Forst. & G. Forst. | Char. Gen. Pl. 111, pl. 56 | 1775 |
| Euphorbiaceae | |
Aleuritis
| Link | Handbuch 2: 437 | 1831 |
| Euphorbiaceae | |
Alevia
| Baill. | Étude Euphorb. 508 | 1858 |
| Euphorbiaceae | |
Algernonia
| Baill. | Ann. Sci. Nat., Bot., sér. 4, 9: 198 | 1858 |
| Euphorbiaceae | ! |
Allenia
| Ewart | Proc. Roy. Soc. Victoria ser. 2. 22: 7 | 1909 |
| Euphorbiaceae | |
Allobia
| Raf. | Fl. Tellur. 4: 116 | 1836 [1838] |
| Euphorbiaceae | |
Allosandra
| Raf. | Autik. Bot. 51 | 1840 |
| Euphorbiaceae | |
Alphandia
| Baill. | Adansonia 11: 85 | 1873 |
| Euphorbiaceae | |
Ambinux
| Comm. ex A. Juss. | Gen. Pl. 389 | 1789 |
| Euphorbiaceae | |
Amperea
| A. Juss. | Euphorb. Gen. 35 | 1824 |
| Euphorbiaceae | |
Amyrea
| Leandri | Notul. Syst. (Paris) 9: 168 | 1941 |
| Euphorbiaceae | * |
Anabaena
| A. Juss. | Euphorb. Gen. 46 | 1824 |
| Euphorbiaceae | |
Anabaenella
| Pax & K. Hoffm. | Pflanzenr. IV. 147 IX(Heft 68): 27 | 1919 |
| Euphorbiaceae | |
Anda
| A. Juss. | Dict. Sci. Nat. 2: 113 | 1804 |
| Euphorbiaceae | |
Anda
| A. Juss. | Dict. Sci. Nat. (ed. 2) 113 | 1816 |
| Euphorbiaceae | |
Andicus
| Vell. | Fl. Flumin. 80 | 1825 [1829] |
| Euphorbiaceae | ** |
Andiscus
| Vell. | Fl. Flumin. Icon. 2: t. 86 | 1827 [1831] |
| Euphorbiaceae | |
Andrichnia
| Baill. | Étude Euphorb. 362 | 1858 |
| Euphorbiaceae | |
Androphoranthus
| H. Karst. | Wochenschr. Gärtnerei Pflanzenk. 2: 5 | 1859 |
| Euphorbiaceae | * |
Angelandra
| Endl. | Gen. Pl. Suppl. 5: 91 | 1850 |
| Euphorbiaceae | |
Angostyles
| Benth. | Hooker's J. Bot. Kew Gard. Misc. 6: 328 | 1854 |
| Euphorbiaceae | |
Angostylidium
| (Müll. Arg.) Pax & K. Hoffm. | Pflanzenr. IV. 147 IX(Heft 68): 17 | 1919 |
| Euphorbiaceae | |
Angostylis
| Benth. | Hooker's J. Bot. Kew Gard. Misc. 6: 328 | 1854 |
| Euphorbiaceae | ** |
Anisepta
| Raf. | Cat. Pl. Exot. 13 | 1824 |
| Euphorbiaceae | * |
Anisophyllum
| Haw. | Syn. Pl. Succ. 159–164 | 1812 |
| Euphorbiaceae | * |
Anisophyllum
| Boivin ex Baill. | Étude Euphorb. 376 | 1858 |
| Euphorbiaceae | |
Annesijoa
| Pax & K. Hoffm. | Pflanzenr. IV. 147 IX(Heft 68): 9 | 1919 |
| Euphorbiaceae | |
Anomalocalyx
| Ducke | Notizbl. Bot. Gart. Berlin-Dahlem 11: 344 | 1932 |
| Euphorbiaceae | * |
Anomospermum
| Dalzell | Hooker's J. Bot. Kew Gard. Misc. 3: 228 | 1851 |
| Euphorbiaceae | |
Anomostachys
| Hurus. | J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 6: 311 | 1954 |
| Euphorbiaceae | |
Anthacantha
| Lem. | Ill. Hort. 4: Misc. 73. | 1857 |
| Euphorbiaceae | |
Anthostema
| A. Juss. | Euphorb. Gen. 56 | 1824 |
| Euphorbiaceae | * |
Antidesma
| Wall. | Numer. List 7289 | 1832 |
| Euphorbiaceae | |
Aonikena
| Speg. | Anales Mus. Nac. Hist. Nat. Buenos Aires ser. 2. 7: 162 | 1902 |
| Euphorbiaceae | * |
Aparisthmium
| Endl. | Gen. Pl. 1112 | 1840 |
| Euphorbiaceae | ! |
Aphora
| Nutt. | Trans. Amer. Philos. Soc., n.s. 5(6[2]): 174–175 | 1837 [1835] |
| Euphorbiaceae | |
Aplarina
| Raf. | New Fl. 4: 99 | 1836 [1838] |
| Euphorbiaceae | |
Apodandra
| Pax & K. Hoffm. | Pflanzenr. IV. 147 IX(Heft 68): 20 | 1919 |
| Euphorbiaceae | |
Apodiscus
| Hutch. | Bull. Soc. Bot. France 58(8): 205 | 1911 [1912] |
| Euphorbiaceae | |
Aporosella
| Chodat & Hassl. | Bull. Herb. Boissier, sér. 2, 5: 488 | 1905 |
| Euphorbiaceae | ** |
Arachne
| Neck. | Elem. Bot. 2: 348 | 1790 |
| Euphorbiaceae | |
Archileptopus
| P.T. Li | J. S. China Agric. Univ. 12(3): 38 | 1991 |
| Euphorbiaceae | |
Ardinghalia
| Comm. ex A. Juss. | Euphorb. Gen. 21 | 1824 |
| Euphorbiaceae | ** |
Argithamnia
| Müll. Arg. | | |
| Euphorbiaceae | |
Argomuellera
| Pax | Bot. Jahrb. Syst. 19: 90 | 1894 |
| Euphorbiaceae | |
Argothamnia
| Spreng. | Syst. Veg. [Sprengel] 3: 760, 847 | 1826 |
| Euphorbiaceae | |
Argyra
| Noronha ex Baill. | Adansonia 1: 162 | 1860-1861 |
| Euphorbiaceae | * |
Argyrodendron
| Klotzsch | Naturw. Reise Mossambique 6(Bot): 100 | 1862 |
| Euphorbiaceae | ** |
Argyrothamnia
| Müll. Arg. | Prodr. 15(2.2): 732 | 1866 |
| Euphorbiaceae | ** |
Argytamnia
| Duchesne | Dict. Sci. Nat. 3: 98 | 1805 |
| Euphorbiaceae | |
Argythamnia
| P. Browne | Civ. Nat. Hist. Jamaica 338–339 | 1756 |
| Euphorbiaceae | ** |
Aroton
| Neck. | Elem. Bot. 2: 336 | 1790 |